Postojna caves the longest cave system in europe can be found in slovenia jama
Underground tourist train in Postojna cave, Slovenia. It is the second-longest cave system in the country.
Tolmin gorge in Triglav National Park, Slovenia
Inside of skocjan cave in Slovenia. Amazing double cave system. The first part is a dripstone cave. The an other part is a karst cave it has river on bottom  which name is Reka.
Natural tunnel in Rakov Skocjan Valley
Stalactites hanging from ceiling in illuminated cave with walking path, Skocjan cave, Slovenia
Breathtaking view of a turquoise stream in rocky Tolmin gorge in Slovenia
Slap Kozjak waterfall in slovenia
Long exposure photo of underground Planina cave in Slovenia with river running through
Predjama Castle built within a cave mouth in Slovenia
Huge Cave Chamber in Slovenia
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Caves

A third of Slovenia is limestone Karst, and a private day leads into Postojna Cave, the UNESCO Škocjan canyon and clifftop Predjama Castle, rain or shine.

Tour Type

Guided

Starting Point

Pickup anywhere in Slovenia

Season

From January to December

Group size

Any group size works — always private, just your group

Send an inquiry
Urška Travel Expert
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Highlights

  • Ride the underground train into Postojna Cave
  • Meet the cave-dwelling olm, the baby dragon
  • Cross the canyon bridges of Škocjan (UNESCO)
  • Predjama, the castle in a cave mouth

Beneath Slovenia lies another country entirely. A third of the surface is limestone Karst, riddled with over 10,000 caves — and about 100 new ones found every year.

The headliner is Postojna Cave, where an underground railway has carried visitors into the earth for over 200 years. Down there lives the olm, the pale ‘human fish’ that locals call a baby dragon.

Nearby, the Škocjan Caves are another scale entirely — a UNESCO World Heritage site carved by the Reka River into a vast canyon you cross on dizzying bridges.

Then there’s Predjama Castle, a fortress built into the mouth of a cave, half-swallowed by the cliff.

It stays cool underground all year, so this makes a great rain-or-shine day — and it’s entirely yours to pace.

Frequently Asked Questions

Exactly what it sounds like: just you and your group — no strangers sharing the van, no fixed departure time. Your driver-guide shapes the day around what you want to see, and you can change your mind whenever you like.

Send us an inquiry with your dates, group size and the kind of things you'd love to see — or hop on a quick call if you'd rather talk it through.

We'll come back with a tailored plan and a price, tweak it together until it's right, and confirm — nothing is paid until you're happy with it.

As early as you can, especially between May and October, when the best dates go quickly. We can often arrange something at short notice too, so it's always worth asking.

There's no per-person ticket here — you pay for the vehicle and the day, not per head. So the more of you there are, the better the value.

What moves the price is how long you're out, how far we travel, and whether you'd like tickets or activities included.

Tell us roughly what you're picturing and we'll send back an honest estimate — no obligation.

A professional local driver-guide, a comfortable vehicle, and all the driving costs — fuel, tolls, parking. Tickets, meals and extras are easy to add; just say the word.

Only after we've agreed on the itinerary and a final price. We'll point you to a secure way to pay, and answer anything you're unsure about first.

Wherever you are — your hotel, your apartment, the airport, or right at the cruise terminal.

Whatever suits you. A half-day runs around six hours, a full day stretches to ten or more, and if one day isn't enough, we'll happily plan several.

Only the Best

Our professional team of locals with vast experience in tourism has cherry-picked the best things to do in Slovenia for all sorts of travellers.

Expert Local Guides

Our professional guides know the best places, are great to be around, and will go that extra mile for you.

100% Made in Slovenia

We are based in Slovenia and all of our holidays are of our own design, making the prices and experiences better for you.

Trusted by Many

We are a fully bonded and insured travel company, keeping your money safe and with thousands of satisfied customers in the past, we still put you first.