The Cave of Velniapilis is a dolomite outcrop. Its bottom part overhangs the surface of the River Nemunėlis by 3 metres and is located at 6 metres distance from the bed of the river. The Cave of Velniapilis is classified as a geological monument of nature of national significance from 1964. It is in a relatively good state and is naturally preserved.
Photo credit: R. Drevinskas