Križna Cave is the seventh longest cave system in Slovenia. People have been visiting it since the Neolithic era, but beforehand, its master was the now unfortunately extinct cave bear. Walking along the paths, used by cave bears for thousands of years, and paddling along the lakes in karst underground is an experience you will never forget.
The magical appeal of Križna Cave is its lakes. Underground lakes that are up to 7 metres deep were formed behind sinter barriers. The latter emerged because calcareous sinter deposits faster on rapids than in slow waters.

The entrance to the Križna cave is somewhere in the middle between the Bloke plateau, the Lož valley and the Cerknica plain. If we take the main passage, called Jezerski rov (Lake Passage), heading from the entrance in the direction of water flow, we get to Kalvarija, where the cave splits in two passages. One is called Blata (Mud) and the other Pisani rov (Coloured Passage).
Through these two passages, the water from the Bloke plateau streams from one lake to another, continues its way to the Nova Križna jama (New Križna cave), which is closed for the visitors, and then surfaces as the Šterbrščica stream at the edge of the Cerknica plain.
| Length of passages: | 8273 m |
| Number of underground lakes: | 22 |
| Maximum depth of the lakes: | 7 m |