Stone Age hunters probably built the ramparts. The research team already has evidence of other structures in the Mecklenburg Bay.
The region has been flooded since the end of the last ice age and the associated melting of the Scandinavian glaciers. Herds of reindeer roamed the largely treeless area. Only a few people lived here, on the edge of the continent; Across Europe, their number was estimated to be only a few thousand people. The discovery contributes to a "new picture of the hunter-gatherer society"