Postojna Cave

cave system, Slovenia

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Last updated

July 1, 2026

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Postojna Cave, located near the city of Postojna in Slovenia, is an internationally renowned cave system celebrated as Europe's premier example of karst phenomena. This extensive system features 9.1 miles (14.6 km) of corridors and grottoes adorned with spectacular stalactite and stalagmite formations.1

A unique inhabitant of the cave is the Proteus anguinus, a remarkable eyeless, colorless amphibian that can grow up to a foot long. The cave system also holds historical significance, having been the site of a World War II exploit where Partisans detonated a German fuel dump, leaving smoke-blackened walls as a visible reminder. The Pivka River flows through the cave, entering 60 feet below its mouth and re-emerging as a spring.1

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Postojna
…a tourist centre for its Postojna Cave, an internationally famous cave system considered to be Europe’s best example of karst phenomena—heavily and irregularly eroded limestone structures and underground streams. References to the town date from the 13th century, and it became a borough in 1432. It became a city in…
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…a tourist centre for its Postojna Cave, an internationally famous cave system considered to be Europe’s best example of karst phenomena—heavily and irregularly eroded limestone structures and underground streams. References to the town date from the 13th century, and it became a borough in 1432. It became a city in…
Read More