Postojna Cave is Slovenia’s most visited natural attraction and Europe’s longest show cave at 24 kilometers, with a small electric train carrying visitors 3.7 km in before the guided walking tour begins. The 10°C interior holds extraordinary stalactite formations and an aquarium with the olm (Proteus anguinus), a blind cave salamander found only in the underground waters of the Dinaric karst, which can live over 100 years and was once called the “cave dragon” by local folklore. Combine with Predjama Castle 9 km away. 50 km from Ljubljana; book at postojnska-jama.eu; bring a warm layer.
cave in Ljubljana
Postojna Cave
Also known as Postojnska jama
Postojna Cave draws about 900,000 visitors a year to a karst cavern system in Slovenia that stretches 24 kilometers, making it the longest cave open to tourism in Europe.
- Type
- cave
- Destination
- Ljubljana
- Cost
- Paid entry
- Founded
- 1818
- Era
- 19th century
- Address
- Jamska cesta 30, 6230 Ljubljana
- Coordinates
- 45.7827, 14.2039
- Official website
- Visit website