You have not truly experienced Slovenia until you visit its subterranean splendour. Stunning underground caves, including the world-renowned Postojna Cave, will charm you with images that you have never witnessed before. This is the home of the unique olm or human fish.
The world-renowned beauty of Postojna Cave is one of Slovenia's pearls. A special train will take you deep into this magnificent underground world. Here you will see unusual sculptural rock formations, magical stalactites and stalagmites, underground halls and strange animals, the most famous and unique one being the human fish (Proteus anguinus). Not far from the queen of caves, in a rocky wall above an underground cave stand the king of all castles – Predjama Castle, the largest cave castle in the world.
Enter into one of the hidden gems of our planet and see one of the world’s unique natural phenomena. Gaze into the deepest and largest underground canyon in the world. A maze of underground galleries and a view of halls with wonderful stalactites and stalagmites will reveal to you a whole new dimension of your planet.
At the foot of the Gorjanci Hills, near Kostanjevica, a small karst beauty is hidden, fascinating and rich in stalactites and stalagmites of various shapes. Here, rain water, underground watercourses, and tectonic shifts have created wonderful calcareous sinter creations with fairy-tale shapes for thousands of years. You can see three hundred metres of the most attractive parts of the cave.
Vilenica Cave is slightly mysterious, as its age has yet to be determined. Once you go into the cave, you will enter the first hall – the Dance Hall. Every year, this cave hosts the final event of the Vilenica International Literary Festival. The diverse shapes of the stalactites and stalagmites and their colours have inspired many artists, so enter the cave and allow your imagination to run free.
Awaken your spirit of adventure and experience a genuine connection with the underground world of Križna Jama. You will be astounded by the series of emerald-green subterranean lakes, which you will cross in the company of experienced cavers until you reach a series of magnificent Karstic chambers. Learn about the amazing site where they discovered the remains of a cave bear which hibernated in the cave during the ice age.
Transform into daring cave explorers. Experience the underground world in the most primal way possible. Explore its mysteries as true speleologists, feel the adrenaline rush of a mountain bike ride through the abandoned mine tunnels or take a ride through underground tunnels in kayaks.
An adrenaline-fuelled adventure in the most famous karst cave in Europe, which will transform you from tourists into explorers.
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Feel the adrenaline rush of a mountain bike ride through the abandoned tunnels of the Mežica Mine under Mount Peca.
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Become a part of an underground adventure in which you will row through the flooded tunnels of the largest lead and zinc mine in this part of Europe.
Read moreAvoid the crowds by visiting some other interesting caves around Slovenia, which will take your breath away with their underground masterpieces, while still keeping their authenticity.
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A list of caves that are open to visitors and can be toured at any time of year.
In Slovenia you encounter various historical periods at every step. Priceless treasures are kept mainly in museums, while in nature you will find images that are different in every season.
Global surprises from salt pans to karst caves.
The world of underground wonders, stunning natural phenomena and unique tastes.
Slovenian treasure troves of world heritage
Must-see attractions in green Slovenia!
Don’t just visit the most famous Slovenian caves! If you visit the Karst, make sure to take this publication with its list of numerous other special features of this surprising landscape.
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