Planina Cave
The largest water cave in Slovenia, famous for the unique underground confluence of two rivers: Pivka, which flows in from Postojna Cave, and Rak, which flows in from the Rak Škocjan Valley. Together, they surface as Unica, which winds its way down Planina Plain. You can visit Planina Cave by walking to the underground river confluence or by taking a boat trip to Paradiž, the most beautiful part of the cave.