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Underground Boat Adventure

Join a wonderful boat expedition deep underground in Karst Slovenia.
4-5 h
Trail length
From: 99€/person
Suitable for most people, including children/elderly, with a minimal amount of walking

Take a boat ride deep into the Planina Cave.

Paddle through a labyrinth of passages and stunning underground hall & chambers.

Feel the serenity of this underground watery maze and enjoy every splash.

Get to know home to 60 aquatic and 40 terrestrial animal species.

Location of the Cave is right next to Postojna. Visit with boats, which lasts 4–5 hours and is only possible when the water level is low.

Included in price



Protective suit


Professional guide


Pickup location and time

Imagine this: You’re in a boat. Underground. The impeccable silence is broken only by the water dripping from ancient dripstones, animal chatter, the occasional splash of your paddle as you make your way into the subterranean world, and the voice of your guide unlocking the mysteries of this extraordinary place. Sounds poetic and appealing? That’s because it is.

Clean, unspoilt, diverse caves and water systems is what Slovenia is famous for, and on this unique boat trip you get to explore both within the confines of the magical Planina Cave. It boasts remarkable biodiversity and is home to 60 aquatic and 40 land species. Among them is the endemic cave-dwelling aquatic salamander known as the olm or “human fish” (Proteus anguinus). Planina Cave has the largest population of these bizarrely beautiful creatures roaming its depths. Spectacular!

Other special features of the cave include a variety of chambers, numerous underground lakes and impressive rock formations. Located right next to Postojna, the Planina Cave is almost seven kilometres long and believed to be the largest water cave in Slovenia. Check it out for yourselves!


Things to know

Tried & Tested Adventures

Our local team with vast experience has cherry-picked the best things to do in Slovenia for all sorts of travelers.

Expert Local Guides

Experienced and passionate local guides will make your trip run smoothly, going that extra mile for you.

100% Made in Slovenia

Based in Slovenia, we are working closely with local suppliers to provide you with a unique experience at the best possible price.

Small Groups

Enjoy faster and smoother travel with more time to enjoy the sights in the company of up to 8 people.

Trusted by Many

We are a financially protected company operating since 2014, and with thousands of satisfied customers in the past, we still put you first.

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