Inner Carniola and the Karst

Postojna and the Karst: caves, castles and Lipizzaner horses

The word karst, used by geologists worldwide for limestone landscapes, comes from this region of Slovenia. Under its stony plateaus lie thousands of caves, including Postojna, one of the most visited show caves in Europe, and the UNESCO listed Škocjan Caves. Above ground you find a castle in a cliff, Lipizzaner horses and cured ham.

Predjama Castle, Slovenia, 20240502 0831 7409
Photo: Jakub Hałun, CC BY 4.0, via Wikimedia Commons

At a glance

Best for
Caves, castles, food, wine and family days out
Airport
Ljubljana (LJU) or Trieste (TRS), about an hour away
Time needed
One to two days
Best season
All year, since caves stay cool and steady
Getting around
Trains and buses to Postojna and Divača, tours, cycling
Good base for
Postojna Cave, Predjama, Škocjan, Lipica and the coast

Why go

The caves are the main draw, and they are spectacular, but the Karst also rewards a slower visit: stone villages, red teran wine, wind dried **pršut** ham and quiet roads for cycling. It sits between Ljubljana and the coast, so it fits naturally into any route.

Top things to do

**Postojna Cave** is the classic. An electric train carries you deep into the cave, then a guided walk leads through halls of stalactites and stalagmites, including the white **Brilliant** formation. In the vivarium you can see the **olm**, a blind cave salamander nicknamed the baby dragon. Tours run all year at set times, and it stays cool inside, so bring a jacket.

A short drive away, **Predjama Castle** is built into the mouth of a cave halfway up a cliff. It was the stronghold of the robber knight Erazem, and you can tour the rooms and, in summer, the cave behind. Combined tickets with Postojna are available.

**Škocjan Caves**, near Divača, are wilder and, for many, more impressive. The underground Reka river has carved a canyon so deep that a bridge crosses it high above the water. It is a UNESCO World Heritage site, with guided tours only and no photography in parts of the route. The walk involves many steps.

At **Lipica**, the original home of the **Lipizzaner** horses since 1580, you can tour the stud farm, watch training sessions and see the horses in their meadows.

Food and wine

The Karst is famous for **teran**, a deep red wine from iron rich red soil, and **Karst pršut**, ham dried by the bora wind. Small family **osmice**, temporary farm taverns that open for a few days at a time, serve home produce. Look for farm stays and wine cellars around **Štanjel**, a hilltop stone village with a lovely garden by the architect Max Fabiani.

Other caves and sights

**Rakov Škocjan**, a valley of natural bridges, and **Lake Cerknica**, an intermittent lake that appears and disappears with the seasons, are close to Postojna. **Vilenica**, one of the oldest show caves in Europe, is near Sežana.

Where to stay

Most visitors see the caves on a day trip from Ljubljana or on the way to the coast. To slow down, stay in **Postojna** town, at a **tourist farm** on the Karst, or in **Štanjel** or **Lipica**.

Getting there and around

Trains and buses run from Ljubljana to **Postojna**, and the cave is a walk from the town centre. For Škocjan, take the train to **Divača**; a shuttle or walk takes you to the caves. Seasonal shuttle buses link Postojna Cave and Predjama Castle.

Practical tips

Both main caves are visited on guided tours at fixed times, so plan your day around them and arrive at least twenty minutes early. Wear sturdy, non slip shoes: paths are wet in places, and Škocjan involves a long walk with many steps and a climb back out. Photography rules differ by cave, so ask on arrival. Children usually love Postojna's train and the olm, while Škocjan suits older children and adults. In summer, combine the caves with a swim on the coast an hour away. Restaurants on the Karst often close one day a week, and osmice open only for short periods, so ask locally which ones are open. The bora wind can blow hard in winter, so drive carefully if you have your own transport.

Questions about Postojna and the Karst

Postojna or Škocjan: which cave should I visit?

Postojna is easier, with a train ride and rich formations, and suits families. Škocjan is wilder, with a vast underground canyon, and suits keen walkers. Many people do both.

How cold is it inside the caves?

Both stay around ten degrees Celsius all year, and Škocjan can be damp. Bring a warm layer and good shoes.

Can I visit the caves without a car?

Yes. Trains and buses reach Postojna and Divača from Ljubljana, and seasonal shuttles link Postojna Cave with Predjama Castle.

Do I need to book cave tours?

In summer, booking online is wise because tours run at fixed times and fill. Check the official cave websites for the current schedule.

Facts checked . Fees, schedules and entry rules change, so always confirm the latest with the official source.

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