The Top 7 Caves around Postojna
Looking to visit a cave around Postojna on your next adventure? To help you better plan your next outdoor experience, we’ve collected Postojna’s 7
best caves for you. Based on the experiences of other users, each is a recommendation you know you can trust — so you can better plan your next adventure.
best caves for you. Based on the experiences of other users, each is a recommendation you know you can trust — so you can better plan your next adventure.
Last updated: November 23, 2025
Postojna Cave
Highlight • Cave
Really fantastic cave system. Is the largest show dripstone cave in Europe and the second largest in the world. Guided tours are available in several languages or via audio guide. …
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Predjama Castle
Highlight • Castle
13th-century cave castle built into a rock face with restored living quarters, dungeons and secret tunnel.
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Proteus Vivarium (Olm Exhibit)
Highlight • Cave
Cave olms never grow up: they spend their entire lives in the larval stage. Researchers estimate that they can live to be 100 years old. The females are sexually mature …
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Planina Cave
Highlight • Cave
The Planina Cave (Slovenian: Planinska jama), formerly also the Small Castle Cave (Malograjska jama) after the Small Castle near its entrance, is one of the longest Slovenian water caves. It …
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Pivka Cave / Abyss of the Pivka River
Highlight • Cave
The entrance to the Pivka Cave is located five kilometers from the Postojna Cave. You have to descend 317 steps to a depth of 65 meters, located in the campsite …
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Natural window
Highlight • Cave
A gaping hole in the limestone walls of the massif, this natural window is a geological marvel. The arch provides a superb subject for photography, with the landscape unfurling below. …
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Black Cave (Črna Jama)
Highlight • Cave
Black Cave is connected with Pivka Cave via an underground tunnel. Guided tours are possible. You may take a walk to cave entrance (about 5min) when cycling by.
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