Zelše Caves
The entrance to these water caves, which are the surfacing point of River Rak, can be found under the Small Natural Bridge in Rak Škocjan Valley. The water that disappears underground in the west part of Lake Cerknica flows on for 3 km through this very cave system, which used to be longer before the cave ceiling collapsed and created Rak Škocjan Valley, as well as the Large and the Small Natural Bridge.