Kaverna I.sv.vojne

The WWI Cavern (Kaverna I. sv. vojne) forms part of an extensive network of underground shelters carved into the rock of Sabotin hill, just outside Nova Gorica on the Slovenian side of the border with Italy. The site belongs to the Isonzo Front of 1915–1917, one of the deadliest theatres of the First World War, where Austro-Hungarian and Italian forces fought for nearly three years.

What will you see there?

Rising to 609 metres, Sabotin was a critical defensive point for the Austro-Hungarian bridgehead protecting Gorizia. Soldiers carved a cavern system straight into the solid rock, spread across nine levels down the steep slope and stretching for more than ten kilometres in total. At its peak, up to 600 soldiers and 80 pack mules lived inside these underground corridors and chambers at once. Today, a restored stretch of over a kilometre lets visitors walk through both the Austro-Hungarian living quarters and the Italian artillery positions built along the ridge.

How do you get there?

Sabotin hill sits a few kilometres west of central Nova Gorica, right on the Slovenian-Italian border. A marked hiking trail leads to the site, and the Park miru (Peace Park) organises guided tours through the cavern system. Sturdy footwear and a flashlight are worth bringing, since the terrain is uneven and some passages run underground.

What should you know before visiting?

Beyond the caverns themselves, the summit of Sabotin hosts an open-air museum with trenches, combat positions, and information panels. The hilltop also offers one of the widest panoramas in the region — on a clear day the view stretches from the Adriatic Sea to Mount Triglav — combining historical depth with striking scenery.

When is the best time to visit?

Spring and autumn bring the mildest weather and fewer crowds than summer. Hot summer days can make the exposed sections of the hike tiring, though the inside of the caverns stays cool year-round. In winter the paths can turn slippery, so it's worth checking conditions before setting out.

Why is this site worth a visit?

The Sabotin caverns are among the best-preserved and most accessible remnants of the Isonzo Front near Nova Gorica. Unlike many other WWI positions in the area that demand serious mountain hiking, this underground network has been partly adapted for visitors without specialist gear. It offers a rare, tangible look at the conditions soldiers endured during one of the war's most gruelling campaigns.

Frequently asked questions

Do you need a guide to visit the caverns? The Park miru at Sabotin runs guided tours that make it easier to understand the layout of the tunnels and the history behind them. Some surface trails can also be walked independently.

How long does a visit take? Walking the accessible stretch of caverns and trenches usually takes one to two hours, depending on pace and how many stops you make at the information panels.

Is the site suitable for children? Yes, though the uneven terrain and narrow passages inside the caverns call for supervision and comfortable shoes.

Are the caverns dark and cold inside? The interior is cooler than the surface, and some corridors require your own light source — a flashlight is recommended even though the main routes are partly lit.