A shuttle bus connecting Postojna Cave and Predjama Castle. Two passengers are standing in front of the bus.

Shuttle Bus: Postojna Cave – Predjama Castle

From 27 June to 30 September 2026, a shuttle bus operates between Postojna Cave and Predjama Castle for visitors to both attractions (subject to seat availability). The journey takes approximately 20 minutes.
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An olm in its natural habitat, moving through the water among rocks in search of shelter.
The City of karst

The olm: The mysterious resident of the Postojna underground

Deep beneath the surface of the Postojna region, in the dark, silent waters of the karst underground, lives one of the world’s most extraordinary creatures. The olm (Proteus anguinus) is a true symbol of the underground world and one of the region’s greatest natural treasures.
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