Vranjača Cave (pronounced [vraɲatʃa]; Croatian: Špilja Vranjača) is a karst cave in Croatia, on the northern slopes of the Mosor mountain near the village of Kotlenice, some 18 miles inland from Split. The cave is a Geomorphological Natural Monument of Croatia, and a significant site of Neolithic culture and post-diluvial fauna. The cave was formed in rudist limestone as a ponor of an ancient stream.