Derinkuyu, The Underground City

Imagine this: You are doing some rennovations in your house, and oyu decide to demolish one of the walls. Only instead of dirt and soil, there is space beyond that wall. And as you start exploring this strange room beyond, you realize it's not just one room, it's an entire city, built underground by the ancients. This is exactly what happened to this person, and this is the story of what we've learned about the amazing underground city of Derinkuyu since that amazing moment of discovery.