Cave under the Predjama Castle

The Cave under Predjama Castle is the second longest cave in Slovenia and extends across four levels. The length of all the currently discovered parts is 13 km. The tourist section is 700 m long and the tour lasts 45 min. The cave has no electric lighting and visitors are provided with flashlights before entering the cave. Comfortable clothes and footwear are the only requirements. Due to its favourable location and temperature, the cave is home to a colony of bats during winter, which is why the cave is closed during their hibernation period. A special adventure tour of the Predjama cave system is available for those seeking a special test of endurance.


May-September or on request;



Postojnska jama d.d. 
Jamska cesta 28
6230 Postojna

T: 00386 5 7000 100


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