Upon further investigation—and some serious excavation work—the area in question was identified as Derinkuyu, an underground city in Turkey ... told a soul,” a second commenter added.

A man from Derinkuyu, in the Nevşehir province of ... Given that this region of Turkey is known for its extensive and intricate underground cave systems, he initially assumed he had accidentally ...

Turkey’s Derinkuyu, located in the Cappadocia region, is the largest excavated underground city in the world. Built across multiple centuries and carved deep into soft volcanic rock, it ...