 For example, in 2002 divers found a big stone with human-made markings, that resemble the letter L. The stone was surrounded by smaller stones and a hypothesis was raised that it was a sacred place for the pagans.In 2002, on the bottom of the lake archeologists found three boats, about 5.5 meters in length, dated to the times of Vytautas the Great.The Cold War Museum was established in the Plokštinė missile base, located in the forest not far from the lake.