The Cave of Kapsia is situated 1 kilometer from the village Kapsia, at the southwest edge of the plain of ancient Mantineia. It is part of a system of active and inactive sinks. In front of the entrance are three sinks. Inside the cave human bone material has been found, according to some researchers from people who drowned during floods in the cave. The cave was used by man during the Neolithic, Hellenistic period and the fourth to sixth century AD.