A Man Knocked Down His Basement Wall, Discovering Ancient Underground City That Housed 20,000 People (Video & Pictures)

The Phrygian invaders, an Indo-European-speaking empire that ruled Anatolia for 600 years, are credited with building the bulk of the city in the centuries before Derinkuyu changed hands several more times, including between the Persians, Christians and Cappadocian Greeks. Watch video here: