Prehistoric rock paintings on the granite vein intersecting the mica gneiss rock wall can be found in Astuvansalmi. All in all there are around 80 pictures painted on the rock (elk, people, boats, etc.) and they are located 4-9 metres above Saimaa’s current water level. The pictures were either painted from a boat or on the ice of ancient Saimaa using red ochre mixed with blood or fat. The shape of the rock itself is rather special as it resembles the side profile of a human face when seen from the lake. It is also possible to dive in the area – amber pendants have been found in the lake near the rock. Arrowheads from the Pit-Comb Ware culture have also been found in the ground.