Archaeological Excavation Report,
Barnacragh,
Co. Galway
Burnt mound
June 2009
Client: National Roads Design Office,
Galway County Council
E No.: E2446
Ministerial Order No.: A024
Licensee: John Tierney
Written by: Mick Drumm Contact details:
John Tierney The Forge,
Innishannon, Co. Cork.
Penny Johnston Tel.: 021 470 16 16
Fax: 021 470 16 28
E-mail: info@eachtra.ie
Web Site: www.eachtra.ie
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Table of Contents
i Summary ............................................................................................................ iv
ii Acknowledgements ............................................................................................. iv
1 Introduction ........................................................................................................1
2 Site Location, Topography and Soils ....................................................................1
3 Background to the Development .........................................................................1
4 Archaeological and Historical Background .........................................................2
4.1 Prehistoric period ...............................................................................................2
5 Results of Excavation ...........................................................................................4
5.1 Trough ...............................................................................................................4
5.2 Mound ...............................................................................................................5
5.3 Stake-holes .........................................................................................................5
5.4 Pit 6
5.5 Lithics ................................................................................................................6
5.6 Charred plant remains .......................................................................................6
5.7 Charcoal ...........................................................................................................7
5.8 Radiocarbon dates..............................................................................................7
6 Discussion ...........................................................................................................7
7 Bibliography ........................................................................................................9
7.1 Websites ............................................................................................................11
8 Figures ................................................................................................................12
9 Plates ..................................................................................................................18
10 Appendices .........................................................................................................22
10.1 Appendix 1: Stratigraphic Index .........................................................................23
10.2 Appendix 2: Stratigraphic matrix ......................................................................34
10.3 Appendix 3: Groups and sub-groups text ..........................................................35
10.4 Appendix 4: Lithics ..........................................................................................39
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Table of contents cont.
11.5 Appendix 5: Plant remains ...............................................................................42
10.6 Appendix 6: Charcoal ......................................................................................43
List of Figures
Figure 1: Discovery Series OS map showing the route of the new N6 Galway to
Ballinasloe road (Contract 4) and the location of all excavation sites..................................... 12
Figure 2: The route of the new N6 Galway to Ballinasloe road (Contract 4) overlaid
on the 1st edition OS map .................................................................................................... 13
Figure 3: The route of the new N6 Galway to Ballinasloe road (Contract 4) overlaid
on the RMP map .................................................................................................................. 14
Figure 4: Figure 4: Post-excavation plan of the site at Barnacragh E2446.............................. 15
Figure 5: Post-excavation plan of the site at Barnacragh E2446 with details of the
trough, the extent of the burnt mound and the associated stake-holes ................................... 16
Figure 6: Illustration of Early Mesolithic needle point (E2446:1:1) ....................................... 17
Figure 7: Illustration of Bronze Age convex end scraper (E2446:5:2) .................................... 17
List of Plates
Plate 1: Excavation site within the surrounding landscape, facing north-west ....................... 18
Plate 2: Post-excavation view of the trough (C.6) facing south-east ...................................... 18
Plate 3: Pre-excavation view of burnt mound material (C.5) facing south-east ..................... 19
Plate 4: Pre-excavation view of burnt mound material (C.5) facing east ............................... 19
Plate 5: Post-excavation view of stake-holes and trough (C.6) facing south-east ................... 20
Plate 6: Probable Early Mesolithic needle point from Barnacragh E2446:1:1
(Photo: John Sunderland) ..................................................................................................... 20
Plate 7: Profile of Early Mesolithic needle point from Barnacragh E2446:1:1
(Photo: John Sunderland) ..................................................................................................... 20
Plate 8: Chert convex scraper found in burnt mound deposits at Barnacragh E2446:5:2
(Photo: John Sunderland) ..................................................................................................... 21
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i Summary
The sites excavated at Barnacragh E2446 comprised a burnt mound, trough, stake-holes and
a pit. Charcoal yielded an Early Bronze Age date, in common with material from other burnt
mound sites nearby. This is one of five Bronze Age sites excavated along this portion of the
new road. The recovery of probable Mesolithic artefacts in secondary contexts is a significant
addition to the known distribution of Mesolithic material in Galway.
Townland Barnacragh
Parish Kilcloony
Barony Clonmacmowen
County Galway
Ministerial Order no. A024
E no. E2446
OS Map Sheet GA87
National Grid Reference 181170 228507
Elevation 70 m OD
Site type Burnt mound
ii Acknowledgements
The licence holder was John Tierney and the field crew included Mick Drumm, Marcella
Loughman, David Fallon, Lesley Davidson and Rafal Wolanski. Illustrations are by Ben
Blakeman, Lesley Davidson, Enda O’Mahony and Robin Turk. Report compilation was by
Anluan Dunne. Specialist analysis was carried out by Farina Sternke, Mary Dillon and the 14
Chrono Centre at Queen’s University Belfast. Artefact photography was by John Sunderland.
The project was commissioned by Galway County Council and was funded the National
Roads Authority under the National Development Plan (2000-2006). The project archaeolo-
gist was Jerry O’Sullivan and the assistant project archaeologist was Martin Jones.
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1 Introduction
This report comprises the final excavation report for a burnt mound found at Barnacragh,
Co. Galway during archaeological testing within the lands acquired for the new N6 Galway
to Ballinasloe dual carriageway road scheme (O’Donoghue et al. 2006). The site comprised
a spread of burnt mound material, a trough, stake-holes and a pit. Charcoal from the site
yielded an Early Bronze Age radiocarbon date.
2 Site Location, Topography and Soils
The site was located in the townland of Barnacragh at NGR 181170 228507. The site was situ-
ated within an area of flat, low-lying ground surrounded by gently undulating terrain (Plate
1). The solid bedrock is Middle to Upper Carboniferous Limestones, with Calp Limestones
predominating in the area of this site. The Quaternary deposits in the region are undulating
glacial drift with some post-glacial peat and alluvial deposits. Trial pitting for the Environ-
mental Impact Assessment report indicated that the subsoil in the area of this site at Barnac-
ragh included both sand and gravel with some clay.
The large flat areas of land represents the remains of wetlands and open waters which were
reclaimed by drainage works were probably undertaken in the 19th and 20th centuries. The
burnt mound was located near an esker, a sand and gravel ridge composed of glaciofluvial
sediments that was laid down by rivers formed from glacier meltwater. This esker was aligned
east to west and c. 20 m to the north there was a palaeochannel which was filled by peat de-
posits. As peat accumulated it covered the entire burnt mound which was found at the south-
ern edge of the palaeochannel. The site was located on soils classified as grey brown podzolics,
with associat ed brown earths, gleys and basin peat. These soils have a moderately wide use
range and are good for cereal, fruit and vegetable cultivation (Gardiner & Radford 1980).
3 Background to the Development
The excavation was undertaken by Eachtra Archaeological Projects for Galway County
Council and the National Roads Authority and forms part of wider archaeological excavation
programme undertaken by Eachtra within approximately 15 km of the proposed N6 Galway
to Ballinasloe dual carriageway scheme (Contract 4, Figures 1-3).
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4 Archaeological and Historical Background
4.1 Prehistoric period
Mesolithic material has now been identified from a small number of sites in western Con-
nacht and in particular material has been identified on the major river and lake systems.
Lough Corrib stands out as a centre of outstanding importance for looking at both Mesolith-
ic settlement and the Mesolithic/Neolithic transition (Gibbons et al. 2004). The artefactual
location bias suggests that the Lough Corrib catchment area was a population centre in the
later Mesolithic period. The finding of a Bann flake at Oranmore confirms that there was a
human presence to the east of the Corrib in the late Mesolithic. No definite Mesolithc site
has as yet been identified in east Galway but there are flint artefacts that probably date to the
Mesolithic from burnt mound sites excavated by Eachtra Archaeological Projects at Barnac-
ragh (E2446) and Urraghry (E2449).
The Neolithic or new stone age began around 4000 BC when the first farmers came in search
of pasture for their livestock and arable land in which to grow their grain. Ireland was then
heavily forested so it was necessary for these farmers to engage in forest clearance. This they
did with polished stone axeheads hafted in wooden handles. A number of stone axes have
been recovered from along the valley of the river Suck and around the Ballinasloe area in
general (Henry 1992, 37-38), indicating activity in the area during the Neolithic.
The Neolithic period also saw new developments in ritual activity, in particular the build-
ing of megalithic tombs. Only seven Neolithic tombs are recorded for the whole of north
Galway (as defined by Vol 2 of the Archaeological inventory of Co. Galway), which includes
the barony of Clonmacowen, and these are limited to court tombs and wedge tombs (Alcock
et al. 1999, 1). There is no published inventory for south Galway. No megalithic tombs are
recorded from the area around Balinasloe and Aughrim; the closest concentration is a group
of four tombs identified around the limestone plains of Monivea.
The erection of large more or less unhewn stones, often in prominent locations, was a wide-
spread custom in prehistoric Ireland and elsewhere in western Europe. These take the form
of stone circles, stone rows, stone pairs and single or isolated standing stones. Single standing
stones may have had a wide variety of uses ranging from route or boundary markers to burial
memorials. Two standing stones (RMP GA098:031 and GA087:023) are located around
Aughrim, one of which is reputed to be associated with a stone axehead (Alcock et al. 1999,
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17).
During the Bronze Age metal was extracted and worked for the first time. Bronze Age axes
and a dagger have been found in the area round Ballinasloe and a bronze spear head (NMI
1986:19) and dirk (NMI 1986:16) were recovered from the river Suck during drainage opera-
tions in the 1880s (information from the National Museum of Ireland Topographical files).
Underwater investigation of the site of Correen Ford, on the river Suck, identified a Late
Bronze Age sword which was found close to a portion of a pottery vessel, perhaps of the same
age (Kelly 1989). Coreen Ford was probably one of the main crossing points on the Suck in
prehistory and early history.
A variety of burial monuments date to the Bronze Age period, including cairns, tumuli and
barrows. A cairn is a mound of stone often used to cover burials, and a tumulus is a mound
of earth used for the same purpose. Barrows are burial monuments which usually consist of
a circular central area, which may be flat or slightly dished (a ring ditch), or domed (a ring
barrow), and which is enclosed by a ditch and occasionally by an external bank. Excavated
Bronze Age burials include interments in cists, in pits lined with stone flags, and in simple
pits, some of which were accompanied by pottery or other grave goods. These can be placed
in tumuli, cairns or barrows, but can also be set within ‘natural’ monuments, such as sand
ridges, or can appear in flat cemeteries, with no above ground marker at all (Waddell 1990,
1).
A total of 22 cairns and tumuli, 10 isolated cist and pit graves and 31 barrows are known
from north Galway (Alcock et al. 1999, 4 & 12). A significant concentration of Early Bronze
Age features can be recognised in the area between Athenry, Tuam and Headford; however,
very few burials or cairns have been identified in the areas around Ballinasloe and Aughrim.
The most common Bronze Age monuments are burnt mounds. They are represented by small
mounds of burnt stone, which were fired in order to heat water in a pit dug into a marshy
area, the stones being discarded once they had cooled. The function of these monuments has
been the source of much debate with various theories being expounded including cooking,
washing and relaxation. Two burnt mounds (087:175B and 087:175C) lying in close proxim-
ity to each other have been identified in Loughbown townland and two other newly recorded
sites at Cooltymurraghy (E2448) and Urraghry (E2449), as well as this site at Barnacragh
(E2446), have been excavated during the course of the present excavation programme. A
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Bronze Age settlement site (E2445) was also excavated in Mackney townland and Bronze Age
dates were retrieved from another site in Mackney (E2443). These are important additions to
the recorded prehistoric landscape in east Galway.
We know almost nothing of Irish Iron Age settlement and burial outside the major complexes
of royal ritual sites and a small number of burial sites that may be Iron Age in date. Deficien-
cies in our knowledge of the settlements and habitations of ordinary people are so marked
that Raftery referred to the majority of the population as the ‘invisible people’ (1994, 112).
The majority of the evidence for the Iron Age period consists of finds of La Tène decorated
metalwork and some pieces of stone sculpture. Examples of La Tène artefacts/monuments
from east Galway include the Turoe Stone located close to Loughrea and a Late La Tène
metal artefact found at. Rahally hillfort. This hillfort was excavated along the route of the
new N6 Galway to Ballinalsoe road (Contract 3) and the evidence indicates settlement in
prehistoric and medieval times (Mullins in progress). Iron Age radiocarbon dates were ob-
tained from excavations at an enclosure site at Loughbown 2, also excavated along the route
of the new N6 Galway to Ballinasloe road (Contract 4). However, medieval dates were also
obtained from Loughbown 2 and the exact nature of occupation at the site during the Iron
Age is uncertain.
5 Results of Excavation
This site comprised a trough, the remains of a mound of charcoal-rich material and heat-shat-
tered stone, 69 stake-holes and a shallow pit, all found within an area of excavation measuring
c. 255 sq. m (Figures 4 and 5). Full details are available in the stratigraphic index (Appendix
1), the stratigraphic matrix (Appendix 2) and the groups and sub-groups text (Appendix 3).
5.1 Trough
The trough (C.6) was found beneath the spread of burnt mound material (C.5). It was cut
into an alluvial silt deposit (C.78) and the glacial till (C.2) beneath it. The northern part of
the trough was sub-circular and measured 2.39 m long by 2.2 m wide and 0.38 m deep.
The total capacity was 1.99 cubic metres. A linear cut extended from the southern part of
the trough for a distance of 1.8 m. It was 0.8 m wide and 0.4 m deep. This may have aided
emptying the trough after use (Plate 2).
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The trough was filled by a basal organic layer (C.7) of peaty sediment with some fragmentary
timbers. This was overlain by a deposit of charcoal and heat-shattered stone (C.5), which
spread beyond the confines of the trough and constituted the main deposit of burnt mound
material. The backfill or slump in the trough was overlain by a deposit of peat (C.3) with
frequent fibrous root and reed inclusions. This formed naturally when the site was no longer
in use and it indicates that the area was often waterlogged. This suggests that the trough was
self-filling.
5.2 Mound
A spread of charcoal and heat-shattered stone (C.5) measuring 5.8 m by 2.35 m was identi-
fied (Plates 3 and 4). This material was a maximum of 0.34 m in height and appeared to be
homogenous throughout. There was one find from the mound, a typical Bronze Age convex
scraper (E2446:5:2, Appendix 4). The typology of this artefact corresponds to the Bronze
Age radiocarbon date that was obtained from this site.
There were two isolated shallow, charcoal-rich spreads of heat-shattered stone that were prob-
ably a continuation of the main mound. The first spread (C.66) measured 0.5 m in length,
0.46 m in width and 0.2 m in height and it was located 1.5 m to the east of the main mound
of material. The second spread (C.89) measured 2.6 m in length, 2.4 m in width and 0.1 m
in height and was located 2.5 m north of the trough (C.6).
5.3 Stake-holes
There were 69 stake-holes excavated at the site (12 within the trough and 57 under the burnt
material to the north-west of the trough). A curvilinear arc of stake-holes was 5 m in length
and made up of 57 stake-holes (C.14, C.16, C.18-C.64, C.67, C.70, C.72-74, C.76, C.156,
C.157 and C.159). It ran from the trough along the contour line to the north-west (Plate 5).
The arc was formed by a central line of vertically placed stake-holes, flanked on either side
by supplementary stakes-holes that were angled towards the central stakes. The impression
is that the central line needed support. The structure may have been load-bearing, but the
stake-holes were very narrow and it may simply have acted as a screen, protecting against the
prevailing wind, which required repeated support.
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The remaining 12 stake-holes (C.76, C.77, C.79, C.80, C.81, C.82, C.83, C.84, C.85, C.86,
C.87 and C.88) were found within the trough and they may originally have been supports
for holding the lining of the trough in place.
5.4 Pit
A shallow circular pit (C.9) was located to the south-west of the trough and the burnt mound.
It measured 1.36 m in length, 1.30 m in width and 0.26 m deep and it contained three fills
(C.10, C.11 and C.12) but there was no indication of the original function of the pit.
5.5 Lithics
The lithics assemblage was examined by Farina Sternke (Appendix 4). It consisted of a flint
blade (E2446:1:1) recovered from the topsoil and a chert scraper (E2446:5:2) found in the
burnt mound material. These were the only artefacts retrieved from the site. The retouched
flint blade (E2446:1:1) was most likely produced using a soft hammer stone. Based on tech-
nology and typology it probably dated to the Early Mesolithic period, possibly a slightly
anomalous form of a rather broad Early Mesolithic needle point (Plates 6 and 7). The re-
touched flake (E2446:5:2) was a good example of a typical Bronze Age convex end scraper,
the result of a platform technology which used a soft to medium stone on a homogenous,
fine-grained black chert (Plate 8).
5.6 Charred plant remains
A total of 11 samples from this site were examined by Mary Dillon (Appendix 5). No charred
seeds were recovered from the deposits. Poor retrieval is common in samples from burnt
mound sites.
5.7 Charcoal
Charcoal from this site was identified by Mary Dillon (Appendix 6). A total of six samples
were examined and the remains were predominantly hazel followed in descending frequency
by ash, alder and oak.
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were heated in fires and then added to the water-filled trough, the extreme heat of the stones
eventually heating the water in the trough until it reached boiling point. It could be main-
tained at this heat by occasional additions of hot stones. Archaeologists suggest that meat was
covered in straw or a similar wrapping and boiled within the trough. Experimental cooking
at reconstructed sites such as Ballyvourney (O’Kelly 1954) has demonstrated that this could
be achieved quite efficiently. However, the scarcity of animal remains from most excavated
burnt mounds (although there are some exceptions) has left the question of function open to
debate. Other theories on their use include bathing and dyeing textiles together with the pro-
duction of hot water and steam for curative purposes and sweat houses (Ó Drisceoil 1988).
All of these suggestions are speculative as there is virtually no conclusive scientific evidence
to prove or disprove theories about how the sites were used. This may be partly because the
sites that archaeologists describe as burnt mounds were used for several different purposes.
We recognise the sites archaeologically by the remains of charcoal and heat shattered stones
but as Ó Néill (2004) points out, these are the remains of a technology (the use of hot stones
known as ‘pyrolithic technology’), rather than specific indications of the aim of the process.
The radiocarbon date from Barnacragh fits in with the Early Bronze Age dates obtained from
nearby burnt mound sites at Urraghry E2449 and Cooltymurraghy E2448. The concentra-
tion of Early Bronze Age dates is interesting as most dated burnt mound sites have a focus of
activity in the Middle to Late Bronze Age (Brindley & Lanting 1990; and see graph of dates
in Ó Néill 2004). However, Early Bronze Age dates were returned from four of the nine
burnt mound sites excavated along the route of the N25 Kilmacthomas realignment (Tierney
in prep.) and a burnt mound sites at Doughiska, Co. Galway yielded a Late Neolithic/Early
Bronze Age date (Fitzpatrick & Crumlish 2000).
The three burnt mound sites at Urraghry, Barnacragh and Cooltymurraghy and other Bronze
Age sites at Mackney E2445 and E2443 are found within an area where most of the known
monuments date to the historic period (see Figure 3). The results from these sites provide a
starting point for an exploration of Bronze Age settlement and landscape use in this part of
East Galway.
A probable Early Mesolithic stone tool was also found at this site. It was from topsoil and
was clearly not associated with the archeology that was excavated at the site. However, it is
a notable addition to the record of Mesolithic stone artefacts from the region and the first
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such find from east Galway. Mesolithic finds were also found in secondary deposits excavated
at Urraghry (E2449), c. 750 m to the west. The potential for Mesolithic activity in the area
around Lough Corrib is discussed by Gibbon et al. (2004) and the finds from this site sug-
gest that the area between the river Suck and the river Melehan was also exploited by hunter-
gatherers.
7 Bibliography
Alcock, O., de hOra, K. and Gosling, P. 1999 Archaeological Inventory of County Galway,
Vol. 2 North Galway. Dublin, The Stationery Office.
Bennett, I. (ed.) 2006 Excavations 2003. Bray, Wordwell.
Brindley, A.L. and Lanting, J.N. 1990 The dating of fulachta fiadh, in Buckley, V. (ed.)
Burnt Offerings. International contributions to burnt mound archaeology, 55-56.
Dublin, Wordwell.
Fitzpatrick, M. and Crumlish, R. 2000 The excavation of three burnt mounds on the
outskirts of Galway city, Journal of the Galway Archaeological and Historical Society 52,
135-143.
Gardiner, M.J. and Radford, T. 1980 Soil Associations of Ireland and Their Land Use
Potential. Dublin, An Foras Talúntais.
Gibbons, M., Gibbons, M. and Higgins, J. 2004 Mapping the Mesolithic in Western
Connacht, IQUA Newsletter 32, 4-7.
Gosling, P. 1993 Archaeological Inventory of County Galway: Vol. 1 West Galway. Dublin,
The Stationery Office.
Henry, M. 1992 Prehistoric Life in Co. Galway: A Distributional Analysis, Journal of the
Galway Hist and Archaeol Society, Vol. 44 (1992), 29-46.
Kelly, E.P. 1989 Ford, in Bennett, I. (ed.) Excavations 1989. Bray, Wordwell.
Mullins, G. In progress Rahally, in Bennett, I. (ed.) Excavations 2006.
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E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
O’Donoghue, J., Tierney, J. and Doolan, A. 2006 N6 Galway to Ballinasloe test excavations
report, Centreline testing 4.0, Contract 4 Cloghagalla Eighter Co. Galway to Beagh,
Co. Roscommon. Unpublished report for Eachtra Archaeological Projects submitted
to the Department of Environment, Heritage and Local Government.
Ó Drisceoil, D. 1988 Burnt mounds: cooking or bathing? Antiquity Vol. 62, 671-680.
O’Kelly, M.J. 1954 Excavations and experiments in Irish cooking places, Journal of the
Royal Society of Antiquaries of Ireland Vol. 84, 105-156.
Ó Néill, J. 2004 Lapidibus in igne calefactis coquebatur: The historical burnt mound
‘tradition’, Journal of Irish Archaeology Vol. XII & XIII (2003-04), 79-86.
Raftery, B. 1994 Pagan Celtic Ireland: the enigma of the Irish Iron Age. London, Thames and
Hudson.
Reimer, P.J., Baillie, M.G.L., Bard, E., Bayliss, A., Beck, J.W., Bertrand, C., Blackwell,
P.G., Buck, C.E., Burr, G., Cutler, K.B., Damon, P.E., Edwards, R.L., Fairbanks,
R.G., Friedrich, M., Guilderson, T.P., Hughen, K.A., Kromer, B., McCormac,
F.G., Manning, S., Bronk Ramsey, C., Reimer, R.W., Remmele, S., Southon, J.R.,
Stuiver, M., Talamo, S., Taylor, F.W., van der Plicht, J. and Weyhenmeyer, C.E. 2004
IntCal04 Terrestrial Radiocarbon Age Calibration, 0–26 Cal Kyr BP, Radiocarbon
46, 1029-1058.
Wadddell, J. 2000 The Prehistoric Archaeology of Ireland. Bray, Wordwell.
Stuiver, M., and Reimer, P.J., 1993 Extended (super 14) C data base and revised CALIB 3.0
(super 14) C age calibration program, Radiocarbon 35, 215-230.
Tierney, J. In preparation. Excavations along the route of the N25 Kilmacthomas
Realignment.
7.1 Websites
Database of Irish excavations www.excavations.ie
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N
8
E2446 | A024/33
Figures
Barnacragh, Co. Galway
E2443 A024/31
Mackney
Pits & ditches
E2449 A024/36
Urraghy E2442 A024/09
Burnt mound
Loughbown I
E2447 A024/34 Ringfort & forge
Coololla
Lime kiln & forge E2444 A024/10
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Mackney
Ringfort with skeletal remains
E2448 A024/35
Cooltymurraghy E2445 A024/32
Burnt mound Mackney
Pits
E2054 A024/21
E2446 A024/33 Loughbown II
Barnacragh Ringfort
Burnt mound
0 2km
Figure 1: Discovery Series OS map showing the route of the new N6 Galway to Ballinasloe road (Contract 4) and the location of all excavation sites
ISSUE 2: Eachtra Journal - ISSN 2009-2237
11
E2446 | A024/33
E2449 A024/36
Urraghy
Burnt mound
E2442 A024/09
Loughbown I
Barnacragh, Co. Galway
Ringfort & forge
E2447 A024/34
Coololla
Lime kiln & forge
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E2448 A024/35
Cooltymurraghy
Burnt mound
E2054 A024/21
Loughbown II
E2446 A024/33 Ringfort
Barnacragh
Burnt mound
Figure 2: The route of the new N6 Galway to Ballinasloe road (Contract 4) overlaid on the 1st edition OS map
ISSUE 2: Eachtra Journal - ISSN 2009-2237
12
E2446 | A024/33
E2442 A024/09
Loughbown I
Ringfort & forge
E2443 A024/31
Mackney
E2447 A024/34
Pits & ditches
Coololla
Lime kiln & forge
E2449 A024/36
Urraghy
Burnt mound
E2444 A024/10
Barnacragh, Co. Galway
E2448 A024/35 Mackney
Cooltymurraghy Ringfort with skeletal remains
Burnt mound
E2445 A024/32
E2054 A024/21 Mackney
Loughbown II Pits
Ringfort
E2446 A024/33
Barnacragh
Burnt mound
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nd
nal
lly
gher
rthwork
ld system
rial Ground/Graveyard
clesiastical Site/Holy well Figure 3: The route of the new N6 Galway to Ballinasloe road (Contract 4) overlaid on the RMP map
stle/Tower
ne Group/Inscibed Stone
gfort
ISSUE 2: Eachtra Journal - ISSN 2009-2237
13
closure
tte
nument 0 Km 2 Km
E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
N
81
76
80
87
82
79
77
83
84
C.6 88
Trough
85
86
63
62
70
61
40 156
41
60
73 64
74
57 72
56 67
58
59 C.5
Burnt Mound
55 54
159
53 157
52 51
50
49 47
48
45 46
44
42
43
16
14 39 34
d
in 35
gW 37
33
in 31
ail 38 36
30 21
ev 29
Pr 28 22
24 18
26 25
27 23 19
20
50 cm 0 1m
Figure 5: Post-excavation plan of the site at Barnacragh E2446 showing close up of the trough, the
extent of the burnt mound and the associated stake-holes
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C.9
E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
E2446:1:1 Flint Blade
Figure 6: Illustration of Early Mesolithic needle point (E2446:1:1)
y Lithics.
E2446:5:2 Chert Scraper
Figure 7: Illustration of Bronze Age convex end scraper (E2446:5:2)
E2446:1:1 Flint Blade
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E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
9 Plates
Plate 1: Excavation site within the surrounding landscape, facing north-west
Plate 2: Post-excavation view of the trough (C.6) facing south-east
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E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
Plate 3: Pre-excavation view of burnt mound material (C.5) facing south-east
Plate 4: Pre-excavation view of burnt mound material (C.5) facing east
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E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
Plate 5: Post-excavation view of stake-holes and trough (C.6) facing south-east
Plate 6: Probable Early Mesolithic needle point from Barnacragh E2446:1:1 (Photo: John
Sunderland)
Plate 7: Profile of Early Mesolithic needle point from Barnacragh E2446:1:1 (Photo: John
Sunderland)
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E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
Plate 8: Chert convex scraper found in burnt mound deposits at Barnacragh E2446:5:2
(Photo: John Sunderland)
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E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
10.1 Appendix 1: Stratigraphic Index
Environmental
C. No. Area/G.S. Dwg. No. Type Dimensions (metres) Description
material
1 Site N/A Topsoil Covers entire site. Light brown, firmly compacted No samples taken.
clayey silt. 20% fibrous roots and
frequent coarse pebble, various
shapes.
2 Site N/A Subsoil Beneath all features. Light whitish grey, indurated, No samples taken.
silty sand with frequent angular
and sub-angular medium pebble
inclusions.
3 Site 5 Peaty deposit 2.20 x 1.90 x 0.12 Mid brown, spongy, silty peat. SS07
Frequent fibrous root and reed and
occasional coarse pebble inclusions.
Overlays (005), underlays (001).
4 Site 5 Colluvium Covers the N half of Mid greyish brown, firmly No samples taken.
the site compacted, clayey, sandy, silt.
Moderate angular and sub-angular
coarse pebble inclusions of various
lithologies. Occasional root fibre
inclusions. Overlays (002), under-
lays (090).
5 0N/5E burnt mound 2.35 x 5.80 x 0.34 Dark bluish black, softly com- SS09
material pacted, clayey, silt with frequent
deposit charcoal inclusions. 20% sub-
angular, heat effected large stones.
Overlays (007), (008), underlays
(003). Main mound deposit.
6 0N/15E Cut of trough 2.46 x 2.39 x 0.38 Sub circular trough. Break of
slope top gradual at S, W, SE,
NW; sharp at N, E, NE, SE.
Sides stepped at N, Concave at S,
smooth at E and W. Break of slope
base sharp at E, NE; gradual at
W, SE, NW and imperceptible N,
S. Flat base sloping down to SW.
Filled by (008), (007), (005), (003).
7 0N/15E 2, 3 Fill of trough 0.84 x 0.50 x 0.12 Mid brown, firmly compacted, SS01
[006]. clayey silt with moderate root
inclusions.
8 S half of 2, 3 Alluvial 2.60 x 2.20 x 0.40 Light brown, firmly compacted, SS05
site deposit clayey silt with moderate, medium,
angular and sub-angular pebble
inclusions.
9 05N/05E Cut of pit 1.36 x 1.30 x 0.26 Sub-circular pit. Break of slope No samples taken.
top sharp, sides smooth, break of
slope base sharp. Filled by (010),
(011), (012)
10 05N/05E Fill of pit [009] 1.36 x 1.30m x 0.13 Mid reddish brown, firmly No samples taken.
compacted peat. No inclusions.
Overlays (011), underlays (001).
11 05N/05E Fill of pit [009] 1.36 x 1.30m x 0.02 Dark, greyish black, very soft, No samples taken.
clayey silt with moderate small
angular stone inclusions. Overlays
(012), underlays (010).
12 05N/05E Fill of pit [009] 1.36 x 1.30m x 0.11 Mid grey, soft clay. No inclusions. No samples taken.
Overlays [009], underlays (011).
13 0N/15E 5 burnt mound 1.90 x 0.65 x 0.08 Very, dark brown, charcoal rich No samples taken.
deposit clayey silt. 25-30% charcoal
flecks. Overlays (008), underlays
(001).
14 0N/10E 5 Cut of stake- 0.03 x 0.02 0.15 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, pointed
base. Filled by (015).
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E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
Environmental
C. No. Area/G.S. Dwg. No. Type Dimensions (metres) Description
material
15 0N/10E 5 Fill of stake- 0.03 x 0.02 0.15 Mid greyish brown, soft silty SS02
hole [014] clay. Occasional fine angular
and medium sub-angular pebble
inclusions.
16 0N/10E 5 Cut of stake- 2.75 x 1.5 x 0.10 Oval stake-hole. Break of slope top
hole. sharp, smooth sides, break of slope
base imperceptible, pointed base.
Filled by (017).
17 5 Fill of stake- 2.75 x 1.5 x 0.10 Mid grey, soft, sandy silt with SS03
hole [016] moderate pebble inclusions.
18 5 Cut of stake- 0.04 x 0.05 x 0.21 Oval stake-hole. Break of slope top
hole. sharp, smooth sides, break of slope
base imperceptible, pointed base.
Filled by (094).
19 5 Cut of stake- 0.03 x 0.03 x 0.05 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Filled by (095).
20 5 Cut of stake- 0.03 x 0.03 x 14 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Filled by (096).
21 5 Cut of stake- 0.03 x 0.03 x 14 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Filled by (097).
22 5 Cut of stake- 0.08 x 0.06 0.29 Oval stake-hole. Break of slope top
hole. sharp, smooth sides, break of slope
base imperceptible, round tapered
base. Top NNE of base at 50°.
Filled by (098).
23 5 Cut of stake- 0.04 x 0.04 x 0.05 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Filled by (099).
24 5 Cut of stake- 0.03 x 0.04 x 0.08 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top N of base at 70°.
Filled by (100).
25 5 Cut of stake- 0.03 x 0.03 x 0.08 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top E of base at 40°.
Filled by (101).
26 5 Cut of stake- 0.05 x 0.04 x 0.20 Oval stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top NE of base at
60°. Filled by (102).
27 5 Cut of stake- 0.03 x 0.03 x 0.09 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top N of base at 60°.
Filled by (103).
28 5 Cut of stake- 0.04 x 0.04 x 0.18 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top E of base at 50°.
Filled by (104).
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E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
Environmental
C. No. Area/G.S. Dwg. No. Type Dimensions (metres) Description
material
29 5 Cut of stake- 0.03 x 0.25 x 0.18 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top NNW of base at
85°. Filled by (105).
30 5 Cut of stake- 0.05 x 0.05 x 0.24 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Filled by (106).
31 5 Cut of stake- 0.03 x 0.03 0.05 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Filled by (107).
32 5 Cut of stake- 0.02 x 0.02 x 0.06 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Filled by (108).
33 5 Cut of stake- 0.45 x 0.4 x 0.17 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top NNW of base at
80°. Filled by (109).
34 5 Cut of stake- 0.4 x 0.4 x 0.14 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Filled by (110).
35 5 Cut of stake- 0.3 x 0.4 x 0.13 Oval stake-hole. Break of slope top
hole. sharp, smooth sides, break of slope
base imperceptible, round tapered
base. Top N of base at 70°. Filled
by (111).
36 5 Cut of stake- 0.04 x 0.04 x 0.17 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top NE of base at
75°. Filled by (112).
37 5 Cut of stake- 0.05 x 0.04 x 0.32 Oval stake-hole. Break of slope top
hole. sharp, smooth sides, break of slope
base imperceptible, round tapered
base. Filled by (113).
38 5 Cut of stake- 0.07 x 0.06 x 0.20 Oval stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top NE of base at
65° Filled by (114).
39 5 Cut of stake- 0.06 x 0.04 x 0.18 Oval stake-hole. Break of slope top
hole. sharp, smooth sides, break of slope
base imperceptible, round tapered
base. Top NNE of base at 85°.
Filled by (115).
40 5 Cut of stake- 0.02 x 0.02 x 0.06 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Filled by (143)
42 5 Cut of stake- 0.05 x 0.03 x 0.10 Oval stake-hole. Break of slope top
hole. sharp, smooth sides, break of slope
base imperceptible, round tapered
base. Filled by (116).
43 5 Cut of stake- 0.03 x 0.03 x 0.09 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Filled by (117).
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E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
Environmental
C. No. Area/G.S. Dwg. No. Type Dimensions (metres) Description
material
44 5 Cut of stake- 0.05 x 0.04 x 0.15 Oval stake-hole. Break of slope top
hole. sharp, smooth sides, break of slope
base imperceptible, round tapered
base. Filled by (118).
45 5 Cut of stake- 0.03 x 0.03 x 0.08 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top NNW of base at
80° Filled by (119).
46 5 Cut of stake- 0.02 x 0.02 x 0.14 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top NE of base at
75° Filled by (120).
47 5 Cut of stake- 0.03 x 0.03 x 0.12 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top NE of base at
85° Filled by (121).
48 5 Cut of stake- 0.04 x 0.04 x 0.05 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Filled by (122).
49 5 Cut of stake- 0.04 x 0.05 x 0.07 Oval stake-hole. Break of slope top
hole. sharp, smooth sides, break of slope
base imperceptible, round tapered
base. Filled by (123).
50 5 Cut of stake- 0.03 x 0.03 x 0.13 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top NE of base at
45°. Filled by (124).
51 5 Cut of stake- 0.03 x 0.03 x 0.17 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top S of base at 45°.
Filled by (124).
52 5 Cut of stake- 0.02 x 0.02 x 0.12 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top SE of base at
70°. Filled by (126).
53 5 Cut of stake- 0.02 x 0.03 x 0.19 Oval stake-hole. Break of slope top
hole. sharp, smooth sides, break of slope
base imperceptible, round tapered
base. Top N of base at 80°. Filled
by (127).
54 5 Cut of stake- 0.02 x 0.02 x 0.06 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top S of base at 80°.
Filled by (128).
56 5 Cut of stake- 0.02 x 0.02 x 0.06 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top SSW of base at
70°. Filled by (130).
57 5 Cut of stake- 0.03 x 0.03 x 0.14 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top SSW of base at
70°. Filled by (131).
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E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
Environmental
C. No. Area/G.S. Dwg. No. Type Dimensions (metres) Description
material
58 5 Cut of stake- 0.09 x 0.03 x 0.19 Oval stake-hole. Break of slope top
hole. sharp, smooth sides, break of slope
base imperceptible. Pointed base.
Top NW of base at 70°. Filled by
(075).
59 5 Cut of stake- 0.06 x 0.03 x 0.22 Oval stake-hole. Break of slope top
hole. sharp, smooth sides, break of slope
base imperceptible. Pointed base.
Top NNE of base at 80°.Filled by
(133).
60 5 Cut of stake- 0.03 x 0.02 x 0.06 Oval stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Pointed
base. Top S of base at 85°. Filled
by (134).
61 5 Cut of stake- 0.07 x 0.06 x 0.11 Oval stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Pointed
base. Top S of base at 85°. Filled
by (135).
62 5 Cut of stake- 0.04 x 0.04 x 0.08 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Filled by (136).
63 5 Cut of stake- 0.08 x 0.05 x 0.14 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible, round
tapered base. Top NNW of base at
45°. Filled by (137).
64 5 Cut of stake- 0.04 x 0.04 x 0.10 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Pointed
base. Filled by (069).
65 5 burnt mound 1.42 x 1.0 x 0.12 Mid bluish grey, firm, silty, sandy CS06
deposit clay. Frequent heat effected, angu-
lar stone inclusions. 15% charcoal
fleck inclusions.
66 5 burnt mound 0.46 x 0.50 x 0.20 Dark black spongy, sandy peat SS08
deposit with frequent angular and sub-an-
gular small stone inclusions.
67 5 Cut of stake- 0.02 x 0.02 x 0.09 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
pointed base. Filled by (068).
68 5 Fill of stake- 0.02 x 0.02 x 0.09 Light yellowish grey, firm sandy SS011
hole [067]. clay with occasional angular and
sub-angular fine and medium
pebbles.
69 5 Fill of stake- 0.02 x 0.02 x 0.09 Light yellowish grey, firm sandy SS011
hole [064]. clay with occasional angular and
sub-angular fine and medium
pebbles.
70 5 Cut of stake- 0.04 x 0.04 x 0.12 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
pointed base. Filled by (071).
71 5 Fill of stake- 0.04 x 0.04 x 0.12 Mid greenish grey, very soft clay SS011
hole [070] with occasional angular and sub-
angular fine and medium pebbles.
72 5 Cut of stake- 0.03 x 0.04 x 0.12 Oval stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Pointed
base. Top W of base at 50°. Filled
by (140).
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E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
Environmental
C. No. Area/G.S. Dwg. No. Type Dimensions (metres) Description
material
73 5 Cut of stake- 0.03 x 0.03 x 0.20 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Round
tapered base. Top NNW of base at
50°. Filled by (141).
74 5 Cut of stake- 0.03 x 0.03 x 0.20 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Round
tapered base. Top NE of base at
50°. Filled by (142).
75 5 Fill of stake- 0.09 x 0.03 x 0.19 Mid greenish grey, soft clay with SS013
hole [058]. occasional angular and sub-angu-
lar fine and medium pebbles.
76 5 Cut of stake- 0.03 x 0.03 x 0.10 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (091).
Cuts [006].
77 5 Cut of stake- 0.03 x 0.03 x 0.10 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (092). Cuts
[006].
79 5 Cut of stake- 0.07 x 0.07 x 0.15 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (147). Cuts
[006].
80 5 Cut of stake- 0.07 x 0.07 x 0.13 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (148). Cuts
[006].
81 5 Cut of stake- 0.03 x 0.03 x 0.12 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (149). Cuts
[006].
82 5 Cut of stake- 0.08 x 0.04 x 0.16 Oval stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (146). Cuts
[006].
83 5 Cut of stake- 0.05 x 0.05 x 0.10 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (150). Cuts
[006].
84 5 Cut of stake- 0.06 x 0.06 x 0.09 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (151). Cuts
[006].
85 5 Cut of stake- 0.06 x 0.06 x 0.12 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (152). Cuts
[006].
86 5 Cut of stake- 0.05 x 0.05 0.10 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (153). Cuts
[006].
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E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
Environmental
C. No. Area/G.S. Dwg. No. Type Dimensions (metres) Description
material
87 5 Cut of stake- 0.06 x 0.06 x 0.11 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (154). Cuts
[006].
88 5 Cut of stake- 0.06 x 0.06 0.08 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (145). Cuts
[006].
89 5 burnt mound 2.40 x 2.60 x 0.10 Dark bluish black, softly com- No samples taken.
deposit pacted, clayey, silt with frequent
charcoal inclusions. 20% sub-an-
gular, heat effected large stones.
90 S half of 5 Peat deposit S half of site Mid brown sandy peat with occa- No samples taken.
site sional sub-angular stone inclusions.
Occasional root fibres and black
reed inclusions. Overlays (004),
underlays (001).
91 5 Fill of stake- 0.03 x 0.03 x 0.10 Dark grey sandy silt. Occasional SS16
hole [076] angular and sub-angular medium
stone inclusions.
92 5 Fill of stake- 0.06 x 0.06 x 0.15 Dark grey, firm , sandy silt with SS17
hole [077] moderate angular and sub-angular
medium pebble inclusions and
frequent peat inclusions.
94 5 Fill of stake- 0.04 x 0.05 x 0.21 Mid greyish brown, soft silty No samples taken.
hole [018] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
95 5 Fill of stake- 0.03 x 0.03 x 0.05 Mid greyish brown, soft silty No samples taken.
hole [019] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
96 5 Fill of stake- 0.03 x 0.03 x 14 Mid greyish brown, soft silty No samples taken.
hole [020] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
97 5 Fill of stake- 0.03 x 0.03 x 14 Mid greyish brown, soft silty No samples taken.
hole [021] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
98 5 Fill of stake- 0.08 x 0.06 0.29 Mid greyish brown, soft silty No samples taken.
hole [022] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
99 5 Fill of stake- 0.04 x 0.04 x 0.05 Mid greyish brown, soft silty No samples taken.
hole [023] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
100 5 Fill of stake- 0.03 x 0.04 x 0.08 Mid greyish brown, soft silty No samples taken.
hole [024] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
101 5 Fill of stake- 0.03 x 0.03 x 0.08 Mid grey, soft, sandy silt with No samples taken.
hole [025] moderate pebble inclusions.
102 5 Fill of stake- 0.05 x 0.04 x 0.20 Mid greyish brown, soft silty No samples taken.
hole [026] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
103 5 Fill of stake- 0.03 x 0.03 x 0.09 Mid greyish brown, soft silty No samples taken.
hole [027] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
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Environmental
C. No. Area/G.S. Dwg. No. Type Dimensions (metres) Description
material
104 5 Fill of stake- 0.04 x 0.04 x 0.18 Mid greyish brown, soft silty No samples taken.
hole [028] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
105 5 Fill of stake- 0.03 x 0.25 x 0.18 Mid greyish brown, soft silty No samples taken.
hole [029] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
106 5 Fill of stake- 0.05 x 0.05 x 0.24 Mid greyish brown, soft silty No samples taken.
hole [030] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
107 5 Fill of stake- 0.03 x 0.03 0.05 Mid greyish brown, soft silty No samples taken.
hole [031] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
108 5 Fill of stake- 0.02 x 0.02 x 0.06 Mid greyish brown, soft silty No samples taken.
hole [032] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
109 5 Fill of stake- 0.45 x 0.4 x 0.17 Mid greyish brown, soft silty No samples taken.
hole [033] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
110 5 Fill of stake- 0.4 x 0.4 x 0.14 Mid greyish brown, soft silty No samples taken.
hole [034] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
111 5 Fill of stake- 0.3 x 0.4 x 0.13 Mid greyish brown, soft silty No samples taken.
hole [035] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
112 5 Fill of stake- 0.04 x 0.04 x 0.17 Mid greyish brown, soft silty No samples taken.
hole [036] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
113 5 Fill of stake- 0.05 x 0.04 x 0.32 Mid greyish brown, soft silty No samples taken.
hole [037] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
114 5 Fill of stake- 0.07 x 0.06 x 0.20 Mid grey, soft, sandy silt with No samples taken.
hole [038] moderate pebble inclusions.
115 5 Fill of stake- 0.06 x 0.04 x 0.18 Mid greyish brown, soft silty No samples taken.
hole [039] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
116 5 Fill of stake- 0.05 x 0.03 x 0.10 Mid greyish brown, soft silty No samples taken.
hole [042] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
117 5 Fill of stake- 0.03 x 0.03 x 0.09 Mid greyish brown, soft silty No samples taken.
hole [043] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
118 5 Fill of stake- 0.05 x 0.04 x 0.15 Mid greyish brown, soft silty No samples taken.
hole [044] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
119 5 Fill of stake- 0.03 x 0.03 x 0.08 Mid greyish brown, soft silty No samples taken.
hole [045] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
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Environmental
C. No. Area/G.S. Dwg. No. Type Dimensions (metres) Description
material
120 5 Fill of stake- 0.02 x 0.02 x 0.14 Mid greyish brown, soft silty No samples taken.
hole [046] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
121 5 Fill of stake- 0.03 x 0.03 x 0.12 Mid greyish brown, soft silty No samples taken.
hole [047] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
122 5 Fill of stake- 0.04 x 0.04 x 0.05 Mid greyish brown, soft silty No samples taken.
hole [048] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
123 5 Fill of stake- 0.04 x 0.05 x 0.07 Mid greyish brown, soft silty No samples taken.
hole [049] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
124 5 Fill of stake- 0.03 x 0.03 x 0.13 Mid greyish brown, soft silty No samples taken.
hole [050] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
125 5 Fill of stake- 0.03 x 0.03 x 0.17 Mid greyish brown, soft silty No samples taken.
hole [051] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
126 5 Fill of stake- 0.02 x 0.02 x 0.12 Mid greyish brown, soft silty No samples taken.
hole [052] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
127 5 Fill of stake- 0.02 x 0.03 x 0.19 Mid greyish brown, soft silty No samples taken.
hole [053] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
128 5 Fill of stake- 0.02 x 0.02 x 0.06 Mid greyish brown, soft silty No samples taken.
hole [054] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
130 5 Fill of stake- 0.02 x 0.02 x 0.06 Mid greyish brown, soft silty No samples taken.
hole [056] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
131 5 Fill of stake- 0.03 x 0.03 x 0.14 Mid greyish brown, soft silty No samples taken.
hole [057] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
133 5 Fill of stake- 0.06 x 0.03 x 0.22 Mid greyish brown, soft silty No samples taken.
hole [059] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
134 5 Fill of stake- 0.03 x 0.02 x 0.06 Mid greyish brown, soft silty No samples taken.
hole [060] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
135 5 Fill of stake- 0.07 x 0.06 x 0.11 Mid greyish brown, soft silty No samples taken.
hole [061] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
136 5 Fill of stake- 0.04 x 0.04 x 0.08 Mid greyish brown, soft silty No samples taken.
hole [062] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
137 5 Fill of stake- 0.08 x 0.05 x 0.14 Mid greyish brown, soft silty No samples taken.
hole [063] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
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Environmental
C. No. Area/G.S. Dwg. No. Type Dimensions (metres) Description
material
138 5 Fill of stake- 0.04 x 0.04 x 0.10 Mid greyish brown, soft silty No samples taken.
hole [064] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
140 5 Fill of stake- 0.03 x 0.04 x 0.12 Light yellowish grey, firm sandy No samples taken.
hole [072] clay with occasional angular and
sub-angular fine and medium
pebbles.
141 5 Fill of stake- 0.03 x 0.03 x 0.20 Mid greyish brown, soft silty No samples taken.
hole [073] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
142 5 Fill of stake- 0.03 x 0.03 x 0.20 Mid greyish brown, soft silty No samples taken.
hole [074] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
143 5 Fill of stake- 0.02 x 0.02 x 0.06 Mid greyish brown, soft silty No samples taken.
hole [040] clay. Occasional fine angular
and medium sub-angular pebble
inclusions
145 5 Fill of stake- 0.06 x0.06 x0.08 Greenish grey, firm clayey silt No samples taken.
hole [088] with occasional medium pebble
inclusions.
146 5 Fill of stake- 0.08 x 0.04 x 0.16 Mid grey, firm sandy silt. 30% No samples taken.
hole [082] large roots.
147 5 Fill of stake- 0.07 x 0.07 x 0.15 Dark grey, firm sandy silt. Oc- No samples taken.
hole [079] casional medium, angular and
sub-angular pebble inclusions.
148 5 Fill of stake- 0.07 x 0.07 x 0.13 Dark grey, firm sandy silt. Oc- No samples taken.
hole [080] casional medium, angular and
sub-angular pebble inclusions.
149 5 Fill of stake- 0.03 x 0.03 x 0.12 Dark grey, firm sandy silt. Oc- No samples taken.
hole [081] casional medium, angular and
sub-angular pebble inclusions.
150 5 Fill of stake- 0.05 x 0.05 x 0.10 Dark grey, firm sandy silt. Oc- No samples taken.
hole [083] casional medium, angular and
sub-angular pebble inclusions.
151 5 Fill of stake- 0.06 x 0.06 x 0.09 Dark grey, firm sandy silt. Oc- No samples taken.
hole [084] casional medium, angular and
sub-angular pebble inclusions.
152 5 Fill of stake- 0.06 x 0.06 x 0.12 Dark grey, firm sandy silt. Oc- No samples taken.
hole [085] casional medium, angular and
sub-angular pebble inclusions.
153 5 Fill of stake- 0.05 x 0.05 0.10 Dark grey, firm sandy silt. Oc- No samples taken.
hole [086] casional medium, angular and
sub-angular pebble inclusions.
154 5 Fill of stake- 0.06 x 0.06 x 0.11 Dark grey, firm sandy silt. Oc- No samples taken.
hole [087] casional medium, angular and
sub-angular pebble inclusions.
155 5 Fill of stake- 0.05 x 0.04 x 0.09 Greenish grey, firm clayey silt No samples taken.
hole [156] with occasional medium pebble
inclusions.
156 5 Cut of stake- 0.05 x 0.04 x 0.09 Oval stake-hole. Break of slope top
hole. sharp, smooth sides, break of slope
base imperceptible. Round tapered
base. Filled by (155).
157 5 Cut of stake- 0.02 x 0.02 x 0.05 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (158)
158 5 Fill of stake- 0.02 x 0.02 x 0.05 Greenish grey, firm clayey silt No samples taken.
hole [157] with occasional medium pebble
inclusions.
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Environmental
C. No. Area/G.S. Dwg. No. Type Dimensions (metres) Description
material
159 5 Cut of stake- 0.03 x 0.03 x 0.08 Circular stake-hole. Break of slope
hole. top sharp, smooth sides, break of
slope base imperceptible. Tapered
rounded base. Filled by (160)
160 5 Fill of stake- 0.03 x 0.03 x 0.08 Greenish grey, firm clayey silt No samples taken.
hole [160] with occasional medium pebble
inclusions.
SS = Soil sample
[ ] = Cut
( ) = Fill
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10.2 Appendix 2: Stratigraphic matrix
Please see attached CD for Startigraphic Matrix
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10.3 Appendix 3: Groups and sub-groups text
10.3.1 Group 1 Burnt mound
This group describes the deposits of burnt mound material, forming an elongated oval
mound of charcoal-rich burnt and heat-shattered stone.
Deposits of burnt stone C.5, C.66, C.89
Description: The oval mound of charcoal rich burnt and heat shattered stone was found to
be homogenous throughout. The mound was composed of discarded heat shattered lime-
stone, sandstone and quartzite. The condition of the discarded stone in the mound varied
from very fragmentary and granular in character to larger, less fragmentary chunks and near
complete water rolled and rounded stones.
The main spread of charcoal and heat-shattered stone was C.5, which measures 5.8
m north to south by 2.35 m east to west. The mound was a maximum of 0.34 m in height.
There was one find from the mound, a typical Bronze Age convex scraper. The typology of
this artefact corresponds to the Bronze Age radiocarbon date that was obtained from this
site.
Spread C.66 measured 0.5 m in length, 0.46 m in width and 0.2 m in height and it
was located 1.5 m to the east of the main mound of material C.5. A second spread, C.89,
consisted of a sub-circular mound of charcoal rich burnt and heat shattered stone and was
present in the eastern part of the excavated area. It measured 2.6 m in length, 2.4 m in width
and 0.1 m in height and was located 2.5 m north of the trough (C.6). Both spreads are likely
to have been a continuation of the main mound.
Interpretation: The mound of burnt and heat shattered stone is essentially the discarded
by-product or waste material of a technology which used hot stones to heat water. The size
of the mound is an indication that many successive episodes of heating of stone took place.
As no stratigraphic sequence was visible in the mound material it is thought that the mound
was created through a continuous sequence of use.
A glacially derived esker (a long, narrow ridge of coarse gravel deposited by a stream
flowing in or under a decaying glacial ice sheet) located 35 m south of the burnt mound is
thought to be the most likely source for the stones used in the heating process. The esker has
been utilised as a quarry in recent times and large quantities of stone resembling the more
intact examples from the mound were present close to the surface of the esker.
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10.3.2 Group 2 Trough
This group describes the shallow sub circular trough found beneath the mound of stone.
Cut C.6, Fills C.3, C.5, C.7, C.8
Description: The trough C.6 was composed of two elements; a shallow circular northern
part and a lower southern linear part. Overall the trough measured 3.85 m NE to SW by 2.39
m NW to SE. The entire trough was situated beneath the mound of burnt shattered stone.
The northern circular part which measured 2.39 m NW to SE by 2.2 m NE to SW
and was 0.38m deep contained a number of stake-holes (See subgroup 1.3). The lower and
southern part of the trough extended in a linear fashion for a distance of 1.8 m NE to SW
and was 0.8 m in width and a maximum of 0.4 m deep.
The trough was filled by four deposits (C.3, C.5, C.7 and C.8). C.3 was a deposit of
peat that accumulated at the top of the trough after it was no long in use. The other three
deposits were clayey silts that probably accumulated gradually after final use of the trough.
Interpretation: The lower part of the trough may have functioned as an outlet channel
when the heated water in the upper circular trough was being emptied. Where this the lower
southern part or outlet channel met with the more circular northern part of the trough, a
number of poorly preserved timber fragments were noted.
It is felt that the northern circular part of the trough was used for retaining and heat-
ing a volume of water. A circular superstructure may have been present here (See subgroup
1.3). Poorly preserved timber fragments were noted at the junction of the circular and linear
components of the trough. It is thought that this represents the remains of a sluice mecha-
nism for retaining and releasing water into the lower part of the trough. The lower part of
the trough is thought to have functioned as an outflow channel to release water down slope
towards the stream.
During a period of heavy rainfall during the excavation the upper circular part of the
trough was observed to be free draining with the lower possible outflow channel retaining
water.
10.3.3 Group 3 Stake-holes
A total of 12 stake-holes were located within the trough and 57 more were located under the
mound and outside the trough in a linear arrangement extending to the west.
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10.3.3.1 Stake-holes within trough
Cuts C.76, C.77, C.79, C.80, C.81, C.82, C.83, C.84, C.85, C.86, C.87, C.88, Fills C.91, C.92,
C.145, C.146, C.147, C.148, C.149, C.150, C.151, C.152, C.153, C.154
Description: Twelve stake-holes were present within the trough, (C.76, C.77, C.79, C.80,
C.81, C.82, C.83, C.84, C.85, C.86, C.87 and C.88). These were situated towards the sides of
the trough. All stake-holes contained a similar dark grey sand silt fill.
Two stake-holes situated in the west of the trough, C.84 and C.77, were deeper and
wider than the other stake-holes present within the trough. They were situated on either side
of the entrance to the linear projection which ran to the SW.
The remainder of the stake-holes were present in an arc along the north and north-
western side of the trough
Interpretation: The stake-holes may have been used to support a wooden lining to the
trough. They may also have been used to support wooden stakes onto which cloth or leather
was fastened. The lining may have been composed of a wattle with clay or moss caulking.
This type of structure would have allowed the hot stones to have been placed around the
edges of the trough and heated the water inside the superstructure whilst keeping the hot
stones outside. No evidence of clay or moss was uncovered.
10.3.3.2 Other stake-holes
Cuts C.14, C.16, C.18, C.19, C.20-C.64, C.67, C.72-74, C.76, C57, C.159, Fills C.17, C.68,
C.71, C.75, C.93-C.123, C.125- C.138, C.140-C.144, C.155, C.158 and C.160.
Description: The 56 stake-holes, (C.14, C.16, C.18, C.19, C.20-64, C.67, C.70, C.72-74, C.76,
C.156, C.157 and C.159) which represent this subgroup extend from the north-western edge
of the trough for a distance of 5 m to the north-west. They contain similar fills and are all
of a similar depth. The orientation of top to base displays some variation. This variation
appears to correspond to a pattern. This pattern was observed to be that a centrally placed
stake-hole had a stake-hole on either side. The central stake-hole was vertical with the stake-
holes on either side angled towards the central stake-hole.
Interpretation: It is thought that all of the stake-holes, in this subgroup, form part of the
same structure or groups of structures. The stake-holes may represent the remains of a dry-
ing rack or windbreak. The method of construction appears to be to support a load bearing
linear structure. The arrangement was of vertical central stake-holes ‘buttressed’ by a stake-
hole to either side. The load bearing capacity of this arrangement goes beyond the ordinary
requirements of a windbreak. In addition to this, the work to create a windbreak using a
woven hurdle work construction (rods and sails) technique would have been made difficult
if not impossible by the presence of the angled stakes on either side of the central uprights.
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Although the structure may represent a windbreak it is it is more likely that these features
represent the remains of a drying rack.
10.3.4 Group 4 Shallow circular Pit
This group describes a shallow circular pit.
Pit C.9, Fills C.10, C.11, C.12
Description: This was a shallow circular pit 1.31 m in diameter and a maximum of 0.13 m
in depth. It was located 2 m to the NW of the NW-SE running linear arrangement of stake-
holes (See subgroup 1.4). The pit contained three fills. The lower fill (C.10) was a red brown
peat deposit. The middle fill (C.12) was a mid grey clay with no inclusions. The upper fill
(C.11) was a dark grey black silt which contained occasional fragments of burnt stone. This
cut of the shallow circular pit is very regular.
Interpretation: The pit C.9 is thought to be a shallow lined pit. The function of this pit in
unclear. The upper fill of the pit contains fragments of heat shattered stone, the lowest pit
fill is very peaty in nature and may represent a lining of some kind. It is thought to be con-
temporary with or later in date than the burnt mound.
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10.4 Appendix 4: Lithics
By Dr. Farina Sternke, MA, PhD, Department of Archaeology, University College Cork
10.4.1 Introduction
Two lithic finds from the archaeological investigations along the route of the N6 Galway-
Ballinasloe Road at Barnacragh, Co. Galway, were presented for analysis. These are associated
with the remains of a Bronze Age fulacht fiadh.
10.4.2 Methodology
All lithic artefacts were examined visually and catalogued using Microsoft Excel. The follow-
ing details were recorded for each artefact: context information, raw material type, artefact
type, the presence of cortex, artefact condition, length, with and thickness measurements,
fragmentation and the type of retouch (where applicable). The technological criteria recorded
are based on the terminology and technology presented in Inizan et al. 1999. The general
typological and morphological classifications are based on Woodman et al. 2006.
Find Matrial Type Cortex Length Width Thickness
(mm) (mm) (mm)
1:1 Flint Re-touched No 44 14 5
5:2 Chert Scraper Yes 30 19 10
Find no. Retouch
1:1 proximal, distal and left edge inverse
5:2 distal and left edge direct semi-abrupt
10.4.3 Quantification
The lithics are one worked flint (E2446:1:1) and one chert artefact (E2446:5:2) (Table 1).
10.4.4 Provenance
The artefacts were recovered from the topsoil (E2446:1:1) and the burnt mound material (C5)
(E2446:5:2) associated with the fulacht fiadh.
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10.4.5 Condition
The lithics survive in patinated (E2446:1:1) and fresh (E2446:5:2) complete condition.
10.4.6 Technology/Morphology
The artefacts represent a modified blade and flake. The blade (E2446:1:1) was most likely
produced using a soft hammer stone, while the flake (E2446:5:2) is the result of a platform
technology which used a soft to medium stone on a homogenous, fine-grained black chert.
10.4.7 Retouched Artefacts
Both artefacts are retouched. Artefact (E2446:1:1) is retouched at its proximal and distal end
as well as its left edge inverse at a low angle. This artefact resembles some known very slim
examples of Neolithic leaf-shaped arrowheads (see Woodman et al. 2006, 130) and could
represent a preform of the same. However, the fact that this blade does not show any bifacial
retouch and would have been extremely slim when finished contradicts this identification.
The well-developed patination and lustred surface suggest that is has been exposed to the ele-
ments for a long time and might therefore be older. It is possible that it represents a slightly
anomalous form of a rather broad Early Mesolithic needle point (see Woodman et al. 2006,
114). The type and location of the retouch would support this identification.
The retouched chert flake (E2446:5:2) represent a very nice example of a typical convex end
scraper.
10.4.8 Dating
The retouched blade most likely dates to the Early Mesolithic based on its technology and
typology, while the convex end scraper is not out of place in a Bronze Age context.
10.4.9 Conservation
Lithics do not require specific conversation, but should be stored in a dry, stable environment.
Preferably, each lithic should be bagged separately and contact with other lithics should be
avoided, so as to prevent damage and breakage, in particular edge damage which could later
be misinterpreted as retouch. Larger and heavier items are best kept in individual boxes to
avoid crushing of smaller assemblage pieces.
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10.4.10 Discussion
The lithic finds from the archaeological investigations at Barnacragh, Co. Galway, along the
route of the N6 Galway-Ballinasloe Road are a possible Early Mesolithic needlepoint and
chert convex end scraper. The latter is clearly associated with the Bronze Age fulacht fiadh,
while the needlepoint which was recovered from the topsoil most likely represents a remnant
of an Early Mesolithic presence in the area. Early Mesolithic settlement in the Midlands is
well-represented through the excavated site at Lough Boora, Co. Offaly (Ryan 1978). Early
Mesolithic material, albeit in secondary context, was also recovered 1km to the west at Ur-
raghry, Co. Galway (Sternke 2006).
10.4.11 Recommendations for Illustration
Retouched Blade (E2446:1:1)
Scraper (E2446:5:2)
10.4.12 Bibliography
Inizan, M.-L., M. Reduron-Ballinger, H. Roche and J. Tixier 1999. Technology and
Terminology of Knapped Stone 5. CREP, Nanterre.
Ryan, M. 1978. Lough Boora Excavations. An Taisce Journal 2 (1)
Sternke, F. 2006. Lithic Report for the Excavation at E2449 Urraghry, Co. Galway. N6
Galway-Ballinasloe Road Project. Unpublished Report. Eachtra Archaeological
Projects, Cork.
Woodman, P. C., Finlay, N. and E. Anderson 2006. The Archaeology of a Collection: The
Keiller-Knowles Collection of the National Museum of Ireland. National Museum of
Ireland Monograph Series 2. Wordwell, Bray.
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11.5 Appendix 5: Plant remains analysis
By Mary Dillon
10.5.1 Introduction
Eleven samples were submitted for plant remains analysis from the excavation of a burnt
mound site at Barnacragh E2446, Co. Galway.
10.5.2 Methodology
Bulk soil samples were collected on site and were processed post-excavation using a simple
flotation method. Each sample was saturated in water to allow the carbonised plant material
to float. This was then poured off into a series of sieves (1 mm and 250 µm), trapping the ‘flot’
(floating material), which was air-dried and stored in air-tight plastic bags. The flots were sort-
ed and scanned for plant material and charcoal using a low-powered binocular microscope
(magnification x 10 to x 40). Nomenclature and taxonomic orders follows Stace (1997).
10.5.3 Results
None of the samples produced plant remains.
10.5.4 Discussion and Conclusion
The lack of plants remains from this site is not altogether surprising. Burnt mounds and
troughs, although commonly excavated, have yielded practically no plant remains (Penny
Johnston, pers. comm.).
10.5.5 References
Stace, C.A. 1997 New Flora in the British Isles (2nd edition), Cambridge, Cambridge
University Press.
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E2446 | A024/33 Barnacragh, Co. Galway ISSUE 2: Eachtra Journal - ISSN 2009-2237
10.6 Appendix 6: Charcoal analysis
By Mary Dillon
10.6.1 Introduction
Site E2446 is located in the townland of Barnacragh, Co. Galway. The site comprised a spread
of burnt mound material, a trough, stake-holes and a pit. Charcoal from the site yielded an
Early Bronze Age radiocarbon date. This report deals with the charcoal retrieved from the site
and looks at the information produced on environment and selective use of wood types.
10.6.2 Methodology
Bulk soil samples were collected on site and were processed post-excavation using a simple
flotation method. Each sample was saturated in water to allow the carbonised plant material
to float. This was then poured off into a series of sieves (1 mm and 250 µm), trapping the ‘flot’
(floating material). This was air-dried and stored in air-tight plastic bags. The flots were sort-
ed and scanned for plant material and charcoal using a low-powered binocular microscope
(magnification x 10 to x 40). All charcoal fragments of 2 mm or greater were identified. Each
fragment was prepared for microscopic examination by fracturing it by hand and thereby
exposing a clean surface along transverse, radial and tangential planes. All three planes were
examined at a range of magnifications (x 5 to x 100) under a Nikon stereo microscope. For
reference literature the website ‘wood anatomy’ was consulted. The number and weight of
fragments were recorded for each charcoal type.
10.6.3 Results
In all, 168 charcoal fragments were identified from six samples.
In Figs 1 and 2 percentage frequencies of the various charcoal types based on fragment count
and dry weight, respectively, are shown. The most frequent charcoal type overall is hazel at
49% or 46% by weight. This is followed in descending frequency by ash 33% / 28%, alder
15% / 24% and oak 3% / 2%.
When considered on a weight basis the results change slightly (Fig. 2).
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10.6.4 Discussion
Burnt mounds are a common feature of the Irish landscape. Charcoal analysis from burnt
mounds excavated along the Gas Pipeline to the West demonstrates that a range of trees
were gathered as firewood, particularly alder (Alnus glutinosa), hazel (Corylus avellana), oak
(Quercus spp.) and ash (Fraxinus excelsior) (O’Donnell 2005). O’Donnell’s studies imply that
the same wood types were used as fuel in burnt mounds across the country, which suggests
that a selection process of some kind was in place. These trees were also common at Kiltotan
Colinstown burnt mound in Co. Westmeath (Dillon 2006) and nearby burnt mound sites
at Cooltymurraghy E2448 and Urraghy E2449 (Dillon 2007a, 2007b). The assemblage from
Barnacragh was a typical burnt mound assemblage, although hazel dominated to the detri-
ment of oak. This is in slight contrast to the nearby burnt mound at Urraghry where all wood
types were equally represented.
Hazel was the most common wood type in the Barnacragh assemblage. It was widely exploit-
ed in both prehistory and historical times for its nutritious nuts and supple rods which were
widely used for building. Its coppice-like growth form makes it relatively easy to cut and there
are normally substantial quantities of dead wood available near ground level for fuel wood.
A pollen diagram from Mongon Bog, near Clonmacnoise in Co. Offaly, (Parkes & Mitchell,
2000) indicates that during the Bronze Age hazel was one of the most prominent trees.
Ash was the second most common wood type. It makes great fuel, burned green or dead, and
this may have influenced its selection. According to the pollen diagram it was readily avail-
able in the locality.
Alder was the third most common wood type. Alder is quite common in the Parkes &
Mitchell diagram (2000), but was probably largely confined to damp/wet areas. Given that
burnt mounds are often suggested as places where dyeing may have been carried out (Waddell
1998, 177), it is interesting to note that alder bark and catkins were used to make a black dye
in the past. This could be a reason for the abundance of alder wood that is associated, not just
with this particular site, but with burnt mounds countrywide
Oak made up just a small percentage of the assemblage. It is slow burning and gives out sub-
stantial heat as it burns which would have made it a natural choice for a fire.
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Fig. 1 Percentage fragment frequency of wood types from Barnacragh.
Fig. 2 Percentage weight of wood types from Barnacragh.
10.6.5 Summary
The charcoal assemblage from Barnacragh was a typical burnt mound assemblage, albeit
with a majority of hazel and only a small amount of oak. It was probably made up of wood
gathered from the locality.
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Table 1
Fragment C5, S5 C7, S4 C5, S14 C5, S9 C65, S6 C66, S8 Total
count
Oak 1 1 3 5
Ash 8 1 18 15 12 2 56
Hazel 20 1 15 21 25 82
Alder 12 3 5 5 25
Weight in C5, S5 C7, S4 C5, S14 C5, S9 C65, S6 C66, S8 Total
grams
Oak 0.130 0.2 0.17 0.500
Ash 1.150 0.005 3.51 1.75 1.01 0.08 7.505
Hazel 7.750 0.005 1.73 1.68 1.3 12.465
Alder 5.720 0.14 0.17 0.36 6.390
10.6.7 References
Dillon M. 2006 Analysis of charcoal assemblages from Kiltoton Collinstown 12.
Unpublished report produced for Eachtra Archaeological Projects.
Dillon M. 2007a. Analysis of a charcoal assemblage from Cooltymurraghy E2448, Co.
Galway. Unpublished report produced for Eachtra Archaeological Projects.
Dillon M. 2007b. Analysis of a charcoal assemblage from Urraghry E2449, Co. Galway.
Unpublished report produced for Eachtra Archaeological Projects.
O’Donnell, L. 2005 Environmental Archaeology from the Gas Pipeline to the West. On
http://www.mglarc.com.
Parkes H.M & Mitchell FJG 2000 Vegetation History at Clonmacnoise, Co. Offaly in
Proceedings of the Royal Irish Academy, Vol. 100B, No. 1, 35-40.
Waddell, J. 1998. The Prehistoric Archaeology of Ireland. Galway University Press, Galway
‘Wood Anatomy’ at http//:www.woodanatomy.ch .
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