Slovenia is a dreamy place: you can find magic even under the rocks! Postojna Cave is the second-longest cave system in Slovenia and a very popular attraction since the year 1810! In this travel guide, you can learn more about the Postojna Cave in Slovenia and you can get all the information you need for visiting it. Visiting the whole Postojna Cave Park with all the attractions can be a perfect day trip from Ljubljana as well.
This place is one of the most popular attractions in the whole world and if you visit Slovenia, you can’t miss the chance to spend a great day here.
History of the cave – How old is the Postojna cave?
Postojna cave system is two million years old, and it was hollowed out by the Pivka River. The cave was constantly mentioned in the old books and stories around the region. The first graffiti inside the cave date back to the 13th century. In 1819 the place got the status of touristic attraction and the first tours took place.
Of course, in those times it was very different from how it looks today because nowadays you can find new roads, new transportation, and security features. For example, the cave train was only added in 1872. In 1818 accidentally, a new area of the cave was discovered by a local. In 1850, the first scientific book about the Postojna caves was published.
At the end of the 1990s, Postojna cave was one of the world’s most visited caves, nearly one million visitors come to see the almost 6 km long cave system, that is open to the public! In 2015 a new underwater section was explored, so now the cave system is 24.120 m long.
How to arrive at Postojna? How far is Postojna cave from Ljubljana?
Postojna Cave is located at the junction of roads leading to Croatia, Italy, Hungary and Austria, a mere 46 kilometers from Slovenia’s capital, Ljubljana.
By bus from Ljubljana
You can arrive very easily by bus from the Ljubljana bus station. We recommend you to take the bus early in the morning (around 8 or 9 am) like that you will be able to check all the attractions available in the cave’s facilities.
The bus station in Ljubljana is very close to the city center, and our accommodation was 5 minutes walking from it, so we took all our trips from the bus station.
It takes approx. one hour and it costs €6 (~$7) one way or €10.80 (~$12) return.
We chose this option. The bus left us at the main bus station of Postojna, and from there we walked for another 20-25 minutes to arrive at the cave.
By train from Ljubljana
The train station is a bit more far from the city center of Ljubljana. It also takes approximately one hour and it costs €5,80 (~$6.50) each way. From the train station, you also have to walk for 30 minutes to Postojna Cave.
If you have a car, then you will definitely have to walk less. You can rent a car in Ljubljana, and drive to Postojna Cave. There is a huge parking lot at the cave.
POSTOJNA CAVE PARK
There are four attractions in the facilities of Postojna Cave Park. There are different combined tickets, so you can as many attractions as you want to. It’s very convenient because like that you can only pay for the attractions you’re interested in. There are also single tickets!
All the tickets are a bit more expensive in the high season. Check out the webpage of the cave for exact dates and prices!
Meet the Queen of Caves – only Postojna Cave
Two Adventures – Postojna Cave and Predjama Castle
100 % Cave Experience – Cave, Castle, and the Vivarium
Full Park Experience – Cave, Castle, Vivarium and the Expo Cave Karst
We bought our tickets at the ticket office, but we had to wait 15 minutes in the line. If you don’t want to wait (it gets crowded in the main season), then we suggest you buy your ticket online, in advance.
Get your ticket in advance to visit the Postojna Cave Park, as it can get crowded in high season, in the summer. Book a ticket at least a day before your chosen date, to be able to book a good time slot! There is fewer visitors/group before midday!
We bought a combined ticket to the Cave, the Castle, and the Vivarium. When you buy your ticket, they will ask you in which language you want to take the cave tour, and then they will tell you when the next tour is. You need to be at the entrance at least 15 minutes before your tour starts, then you need to go to the line of your chosen language.
Three of the attractions (the cave, the Vivarium, and the Expo Cave Karst) are in the facilities of the cave, the Predjama Castle is located some kilometers from the cave.
After you finish visiting all the attractions in the cave, you can go to the castle. If you’re visiting during the summer months, you can take the free shuttle bus between the castle and the cave. All holders of the combo tickets to the Postojna cave and Predjama castle tours can use this service, between July and September. The buses depart every half an hour from the parking lot, right in front of the ticket offices. If you’re visiting during the winter, spring or autumn, you need to have a car to get to the castle.
If you want to visit the Predjama Castle during the low season, there will be no shuttle bus to take you there from the caves. You can either get a taxi (and ask the driver to wait for you, until you finish exploring the castle, and then take you back to the bus or train station) or take an organized tour!
At the cave park and at the castle, you can find restaurants, snack stores and souvenir shops full of cool Slovenian products.
The souvenir shops and restaurants
The location of the Postojna cave is full of restaurants and stores suitable for every kind of customer. You can find a lot of food options like pizza, hamburgers, salads, French fries, healthy food, and even vegan options. Desserts are also very good, you can even try the special baby dragon ice-cream, that has a cookie with the shape of the human fish.
The souvenir stores are also very cool, here you will see how beloved is Baby Dragon at Postjana cave! You can find books, magazines, postcards, clothes, paintings and even plush toys in different sized of this mighty creature. The human fish is the new teddy bear!
Are you ready for the adventure? Do you already have a travel insurance?
World Nomads has the best insurance options for backpackers, young travelers and digital nomads.Click here to get your insurance
1. Postojna Cave
The entrance of the cave
The jewel of the crown, Postojna cave is the most popular of all the attractions in Cave Park.
Usually, the tours start every half an hour, and you can find them in different languages like English, Slovenian and German. If you want to have more information in your mother language you can also get an audio guide, they have them in a lot of languages (like Spanish, French, Italian, Japanese, Chinese, Russian and even Hungarian!).
The cave has a regular temperature of 10 degrees the whole year. It doesn’t matter if it’s warm or cold outside, even if you visit it during the summer months, remember to bring with you some long pants and a jacket.
The duration of the tour is 90 minutes. The train ride includes 3,5 km and the hike is 1,5 km.
Don’t forget warm sweaters, jackets, and long pants at home, because you will need them in the cave! The temperature is very low during the whole year. If you forget to bring warm clothes, you can rent some at the entrance, but you need to pay.
This is the most exciting part of the tour! When you enter the cave, first you need to sit in a little train that takes all the visitors to the start of the tour. The ride lasts 15 minutes, and then you will need to walk with your group and the tour guide. The train journey is super exciting, you can admire all the beautiful rock formations, stalactites, and stalagmites on the way. The train also goes through some incredible, like the great chandelier salon in the middle of the cave where both directions of the train pass.
Incredible rock formations
Once you go out of the train, the guide will tell you to follow him or her through the walking path. Inside you will find beautiful and unique inner landscape shaped by stalactites and stalagmites, interesting rock curtains and mineral deposits that create very capriccios formations.
Some of the stalactites and stalagmites had the luck of growing up and down with a base point over each other. These two formations fused into some great pillars that can be seen all along the cave.
The hiking can be challenging at some points of the route, due to the high inclination, but after the highest point, it will be very easy to go downhill.
Baby dragon – A.K.A. the Olm
This cave has a lot of characteristics that make it unique, and one of them is the presence of the olms. The “Baby dragon”, olm or “Human fish” are rare endemic species. The famous olms can only be found in the water ponds of this cave, there is no other place in the world where you can find this species.
The human fish has no eyes, even if they born with them, the lack of light in the cave makes them useless and they stop developing with the age. This little species has been famous for centuries, even before it was classified, during the middle ages. When the rainy season starts, the water level on the cave usually grows, and sometimes the water was putting these little animals outside, the locals used to think that they were baby dragons, they certainly look like them!
Entering the Vivarium
Caves are very unique environments, and life is so precious and adaptative that you can find a bunch of interesting species that live, grow and evolve inside of the less known place.
Postojna cave has a rich biodiversity in their massive tunnels, there are so many species here, that this place was the actual birthplace of the geobiology, the study of the living forms founded in caves.
The nice zoo is constructed inside of a smaller cave where the environmental conditions are the same as in the Postjana cave. Here you will be able to observe some more human fishes, cave insects, cave shrimps, and cave spiders. All of these creatures are very small and they barely move, so you need to be patient to be able to observe them inside their little boxes.
3. Expo Cave Karst
This is the official exhibition, where you can read and learn more about the history of the Karst mountains, the Postojna cave in Slovenia. You can get more information about all the important events and discoveries that happened in this region.
This is an interactive exhibition, with special attention to young visitors. It’s family-and kid-friendly, focusing on learning about the social, historical and biological background of the Karst region, that surrounds the cave.
4. Predjama Castle
Predjama Castle in Slovenia – How to visit the largest cave castle in the worldWe have visited a lot of castles during our travels, but the Predjama Castle is definitely the most impressive of all. It is well preserved, it is located in a lovely place, but what the most impressive is that it is constructed inside of a cave! Predjama Castle is the largest cave castle in the world, with that being part of the book of the Guinness Records as well!
The castle was shaped using the natural structure of a cave, fussing the hand made materials with the natural rock walls. It is a wonder of architecture and due to its strategic position and defense, the castle was never conquered in battle.
The tour through the Predjama Castle is very informative, the ticket includes an audio guide in different languages for free. You can listen to all the information about the rooms in the castle.
This place is full of secrets and landmarks, if you want to learn more about it you can check our article about our visit to the Predjama Castle clicking here.