It covers about 12 square kilometres (4.6 sq mi) and reaches up to 49 metres (161 ft) in depth.

[3] The Cold War Museum was established in the Plokštinė missile base, located in the forest not far from the lake.

Scientist think that the water level was much lower years ago and some islands are now underwater.

[4] 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 name is associated with the stories about beggars (Lithuanian: ubagai) who liked to party on the island when returning from the Great Žemaičių Kalvarija Festival.