Inside the caves of Postojna
Nature Slovenia

Postojna caves

Slovenia also has beautiful nature to offer underground. The Postojna Caves are a cave system of unprecedented magnitude. Prepare for an unforgettable adventure as you explore the mysterious passageways, stalactite formations and hidden chambers of these breathtaking caves.

Tour of the caves

Step into the magical underground world of the Postojna caves. Every hour a new exploration begins. A 90-minute journey where an expert guide takes you through the caves’ most intriguing sites.

Stalactites on the route through the Caves of Postojna

Explore the world’s largest caves

You start your journey on a train that takes you through the first 2 miles of the caves. You then hike another mile past remarkable stalagmites, stalactites and unique rock formations

The Postojna cave system stretches for 15 miles and is one of the largest in the world. Part of this vast space is open to visitors. During the tour, you will encounter some remarkable stalactite formations. The Brilliant: a 16-feet-high stalagmite that symbolises the caves. The Skyscraper: a 52-feet-high stalagmite that is centuries old.

Do you see the white baby dragon?

In the display case at the end of the tour, you will find the cave owl, also known as the ‘baby dragon’. It is a rare species of salamander that lives exclusively in the dark. This white animal lives in the Postojna caves.

Additional exhibitions

At the Postojna Cave Park, you can also buy tickets for other exhibitions. A permanent exhibition on cave animals and also one on butterflies. You can buy a cheap combination ticket for these. In hindsight, we thought this was a waste of money. But it can be a good filler if you have to wait until the time of the booked tour.

To see the special critter ‘the Cave Elm’, you don’t need to buy an extra ticket. There is a kind of terrarium at the end of the tour of the caves where you can see this critter.

Useful tips

  • Bear in mind that the temperature in the caves is cool, between 8 and 10 degrees. So bring a cardigan or jumper. Walking shoes are also recommended.
  • Make sure you are present 15 minutes the start of your booked tour to check in.
  • Children under 14 are only allowed in when accompanied by an adult.
  • You can park (paid) on site near the caves. Walking from the town of Postojna is also possible. Count on 30 minutes.
  • There are guided tours in English, German, Italian and Slovenian. Audio guides are available in 13 more languages.

Opening hours

Postojna caves are open every day. Even on Sundays.

  • May to September: Tours every hour from 9 am and the last one at 5 pm (extra at 6 pm in July and August).
  • April and October: Guided tours at 10, 11, 12, 13, 15 and 16 hours.
  • November to March: only three tours per day. At 10am, 12pm and 3pm.

Tickets and prices

The caves are open all year round, with varying opening hours depending on the season. Tickets can be bought on site at the Postojna Cave Park. To avoid crowds and waiting, it is wise to book your tickets online in advance.

Adults€ 29,90
Students 16-25 years old€ 23,90
Children 6-15 years€ 17,90
Children up to 5 years of age€ 1,00
Postojna caves and park are accessible by wheelchair and pram.

Discover the magic of the cave world

The Postojna caves offer an exciting journey through time, where you will discover the secrets of the earth and witness the splendour of nature.