Step into the vast underground city of Derinkuyu in Turkey, an engineering masterpiece that once housed thousands of people.#AncientCities #TurkeyHistory #UndergroundMystery Trump releases ...

Some cities have hidden underground tunnels ... Carved into the soft volcanic rock of Cappadocia, Turkey, this 18-level ...

Derinkuyu is one of the deepest excavated underground cities in Turkey, dug out in early Christian times, when believers hid away from invading armies. Carved from the soft volcanic stone ...