Derinkuyu: The Massive Underground City Hidden Beneath Turkey

Deep under the surreal landscapes of Cappadocia, Turkey, lies Derinkuyu — an astonishing multi-level underground city carved into soft volcanic rock that once sheltered up to 20,000 people complete with living quarters, churches, schools, wineries, stables, and sophisticated ventilation shafts. Was it built as temporary refuge from invading armies… or as a doomsday bunker to survive an ancient global cataclysm that wiped out the surface world? Explore the eerie tunnels, massive rolling stone doors, and the mind-blowing engineering of this 3,000-year-old mystery that still baffles archaeologists today.