The Hossa Värikallio rock paintings are amongst the largest prehistoric rock paintings in Finland. The pictures on the rock wall rising from Lake Somerjärvi were painted in the Stone Age, i.e. about 3,500 – 4,500 years ago.
Paintings were painted from a boat or when standing on the ice of the lake. On the surface of the rock wall there are 61 separate figures depicting scenes of hunting and shamanic rituals. The paintings have probably been used for marking a route or describing events.
Värikallio is accessible all year round. In summer there is a trail leading to the paintings, and an observation platform has been built in front of the cliffs. In winter there is a skiing trail to the cliffs and a snowmobile trail nearby.