 At a length of 170 m and a width of 140 m, it covers a surface area of 0.202 km².It has a maximum depth of 11 m. It is located in the center of the Jasmund National Park and its famous chalk cliffs.At its embankment, the lake features a Slavic hill fort called "Herthaburg", with a height of 17 m. It was constructed and inhabited between the 8th and 12th century.