The document summarizes observations from 8 sites visited during a field trip to Horne Lake. At Site 1, a limestone bluff with solution holes was observed. Site 2 showed evidence of karst in the form of a dry gully. Site 3 had a limestone outcrop with clearly defined dipping beds. Site 4 contained a grike solutional hole near a limestone outcrop. Site 5 included three sinkholes of various sizes, possibly formed from the coalescence of two sinkholes. Site 6 featured a dry channel acting as a swallet leading to a cave entrance. Site 7 had exposed epikarst and solutional features near Cougar Cave. Site 8 discussed potential plant and forest interpretations along

1. HORNE LAKE FIELD TRIP – PHOTOS &
NOTES – SEPTEMBER 18, 2011

8. Site 1 – At base of trail.
7-8 m high and 6-7 m wide limestone bluff
with 1-2 m thick dipping limestone beds.
Number of small solutional holes visible in
limestone outcrop

14. Site 2 – At 6th switchback on trail or
somewhere nearby
Moderately steep slopes in forest with no
evidence for surface water flow. Lack of
surface water flow a possible indicator for
karst. Evidence for dry gully/ small linear
depression.

20. Site 3 – At 8th switchback
Limestone outcrop with slightly
overhanging block. Well defined beds in
limestone dipping 50 degrees to south.

26. Site 4 - At 3rd crossing of
River Bend Gully
Dry valley upslope. 4-5 m long,
20-30 cm wide and 1-2 m deep
grike/solutional hole. Outcrop
with well defined beds nearby

31. Site 5 – The big and small sinkholes
Small lookout on side of trail. Three sinkholes
present – one large, one small and one
possible. Large sinkhole oval in shape 25-30
m long, 15 m wide and 3-5 m deep. Two
possible drainage foci, with two small
solutional openings in one. Possibly two
sinkholes that have coalesced. Small
sinkhole nearer to trail 5-6 m diameter and 2
m deep, 60-70% sideslopes. Smaller less
defined depression upslope of small sinkhole
– possible sinkhole.

36. Site 6 – Just above River Bend
Entrance
Upslope – 2-3 m wide channel in 20-
25 m wide and 6-7 m high gully. Dry.
With cobble/gravel channel leading
down to cave entrance, acting as a
swallet. Downslope possible overflow
and old dry valley.

39. Site 7 – Cougar Cave area
Cave entrance 1 m by 1 m, with steep
drop into passage <10 m long. Lots of
rounded limestone outcrop with
exposed epikarst surface and solutional
holes and thin soil cover. 6-7 m long
and 0.5 m wide and >1 m deep grike
feature.

42. Site 8 – On trail back
down
Sloping trail back to Site
#1 - plant and forest
interpretation?