Postojna Cave

Name: Postojna Cave
Address: Jamska cesta 30, Postojna, Postojna, SI

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Caves & gorges ·Postojna ·Closed

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#2Things to do in Postojna Inner Carniola RegionTravelers' Choice 2026

Visit: 90 min
Good on a rainy day

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About

Postojna Cave is a karst cave system near the town of Postojna in southwestern Slovenia, the country's largest tourist attraction.

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Why go

The 3.5 km cave train ride, then 1.5 km on foot with a guide
The olm, the world's largest troglodytic amphibian, kept at the Vivarium Proteus 100 m before the entrance
The 175 animal species of the cave system, 115 of them true cave species, a world record

Opening hours

Today09:00 – 17:00Show all

Monday09:00 – 17:00

Tuesday21:00 – 17:00

Wednesday09:00 – 17:00

Thursday09:00 – 17:00

Friday09:00 – 17:00

Saturday09:00 – 17:00

Sunday09:00 – 17:00

With kids Tips for your visit Best time to visit Know before you go

With kids

Children are guided through the permanent exhibition on the cave and karst by an olm and a slenderneck beetle.

Tips for your visit

Plan about 1.5 hours for a full tour.
Bring a waterproof coat; the humidity inside is very high.
Stop at the permanent exhibition on the cave and karst, which opened in April 2014.

Best time to visit

The developed part of the cave is open all year, so a visit is possible in any season.
Inside, the temperature now ranges from 8 to 10 °C, up from about 8 °C a few years ago, due to climate change.
Temperatures rise slightly in summer and fall a little in winter.

Know before you go

The cave is open Monday and Wednesday to Sunday, 09:00 to 17:00.
Guides lead tours in several languages through the lit galleries.
Harder-to-reach caves can be visited in small groups, but visitors need suitable caving equipment.

Shorts

Interesting facts6

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Its greatest depth is 127 m.
Postojnska jama - Wikipedia
The cave is the first show cave in the world to breed the human fish in captivity.
Postojnska jama - Wikipedia
It is the world's second-largest show cave, after the Jeita-Grotte.
Höhlen von Postojna - Wikipedia
The Pivka stream sinks under Sovič hill; downstream it emerges at the surface as the Unica.
Postojnska jama - Wikipedia
The cave system has three main levels; the lowest still carries the Pivka river.
Höhlen von Postojna - Wikipedia
Caves formed where poorly permeable flysch borders thick limestone.
Höhlen von Postojna - Wikipedia

Sources: Postojna Cave - Wikipedia · Postojna - Wikivoyage (sleep) · Höhlen von Postojna - Wikipedia · Grotte de Postojna - Wikipedia · Postojnska jama - Wikipedia · checked 18 Oct 2026

Where

Jamska cesta 30, Postojna

Plan from here: Evening walk →

Questions and answers

How long does a visit to Postojna Cave take?

A full tour of Postojna Cave lasts about 1.5 hours.

How far is Postojna Cave from Ljubljana?

Postojna Cave lies about 50 km southwest of Ljubljana, the capital city, near the town of Postojna.

How deep is Postojna Cave?

The greatest depth of Postojna Cave is 127 m.

What animals live in Postojna Cave?

Over 175 animal species live in the cave system, 115 of them true cave species, a world record. The olm is the best-known of them.

Is there an audio guide at Postojna Cave?

Yes. Visitors can walk with a guide or with an audio guide, which is available in 17 languages.

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