Pisamalahti hill fort in Sulkava 6.8.2006

Ancient hill forts are often high cliffs fortified with stone and wooden walls.

Pisamalahti hill fort is one of the most valuable ancient fortresses in Finland. On the top of the hill fort parts of old stonewall have remained from the 12th century. The hill fort rises about 55 meters above Enovesi lake.

Source: http://www.nba.fi
Source: http://www.savonlinnaseutu.fi