3. Stone tools of all Prehistoric periods and mainly of Middle and Upper Palaeolithic have been collected at the north region of West Achaia. Peiros River valley 250.000 – 40.000 Mavri Myti 80.000 Elaechori 35.000 – 30.000
4.
5. Choppers, chopping tools and pebble tools from Mavri Myti before 80.000 (Middle Palaeolithic period)
6. Stone tools from Elaeochori 35.000 – 30.000 (between the end of Middle Palaeolithic and the beginning of Upper Palaeolithic )
7. Neolithic period 6.500 – 3.000 B.C. Early Neolithic 6.500 – 6.000 B.C Middle Neolithic 6.000 – 4.500 B.C. Late Neolithic 4.000 - -3.000 B.C.