Walk through massive underground hangars and across abandoned runways on a guided tour of Zeljava Airbase. This two-hour experience combines Cold War history, engineering feats, and local stories with hands-on exploration of a remarkable ruined complex.
More ways to explore the area's outdoor wonders
A low wind slices across the empty concrete of the former runway, and a weathered Douglas C-47 sits with its wings spread like an invitation. Guides gather visitors at the plane, hand out flashlights, and the group crosses long, sun-baked tarmac toward a gash in the hillside that hides a 3‑kilometer network of concrete tunnels.
Difficulty
moderate
Duration
2 hours
Fitness Level
Basic walking fitness; able to walk ~3 km on uneven surfaces and negotiate stairs and low passages.
Wildlife
History
Zeljava was constructed during the Cold War as a hardened, underground airbase and later damaged during the breakup of Yugoslavia in the early 1990s, leaving vast concrete interiors and ruins.
Conservation
Visitors are asked to avoid graffiti, not remove artifacts and carry out all trash; the fragile concrete and surrounding karst ecology are vulnerable to erosion and human impact.
Reserve your spot on the Zeljava Airbase: History and Adventure Tour/Plitvice today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring a reliable headlamp
Tours include a flashlight but a personal headlamp keeps hands free for balance in dark, uneven tunnels.
Wear closed-toe shoes with grip
Concrete floors, rubble and damp patches make sturdy hiking or work shoes a must.
Prepare for low-light, tight spaces
This tour includes narrow, dim passages—avoid if you have severe claustrophobia or mobility issues.
Stay with the guide and follow safety rules
Sections of the base are unstable; guides set routes and safety briefings for a reason—heed them.
Sturdy closed-toe shoes
Provide traction and protection on uneven, sometimes wet concrete surfaces.
Headlamp or spare flashlight
Keeps hands free and provides reliable light in tunnels where shadows are deep.
Light waterproof jacket or fleece
Underground temperatures are cool and sections can feel damp; layers help regulate comfort.
spring
Reusable water bottle
Hydration for the walk and travel between parking and tunnel entrances.
summer