@Milenatra 30 October 2022 more from that month

Cerje cave Entry into the Cerje cave is situated on the western side of the Kalafat mountain, in the wider area of the Kamenički vis plateau. Entrance is located at the point where the river of Provalijska reka sinks underground. The cave itself is hydrologically active. Geologists estimate that the cave is some 2 million years old