Monuments Ep. 4: Željava: The Secret Underground Airbase

We travel to the border of Croatia and Bosnia and Herzegovina to explore Željava Airbase (Object 505)—one of the largest and most secretive underground military complexes built during the Cold War. Carved deep into the base of Plješevica mountain, this massive subterranean bunker was engineered to withstand a direct nuclear strike and house squadrons of fighter jets. Join us as we venture past the colossal concrete blast gates and explore the pitch-black, ruined tunnels of this monumental abandoned facility. ⚠️ DISCLAIMER: The area surrounding Željava Airbase contains active minefields and unexploded ordnance (UXO) left from past conflicts, alongside hazardous structural conditions inside the tunnels. Always obey warning signs and do not stray from paved paths. #Zeljava #Object505 #Abandoned #ColdWar #UrbanExploration #AdventureAnts