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

Imagine knocking down a wall in your home as part of renovations, only to find a tunnel to a secret underground city behind it? Though this sounds like the plot from a fantasy movie, it actually happened to one guy in Turkey, in 1963. The man, from Cappadocia in the Nevsehir province of Turkey got the shock of his life when he discovered the tunnel, which led to the ancient underground city of Derinkuyu. Read on to discover more about this incredible find.

Derinkuyu, burrowed more than 280 feet beneath the Central Anatolian region of Cappadocia, is the largest excavated underground city in the world and is believed to connect to more than 200 smaller, separate underground cities that were discovered in recent decades, Turkish guides told the BBC.