Underground city unearthed in Turkey may have been refuge for early Christians

Archaeologists in southeastern Turkey have unearthed a vast underground city that was built almost 2,000 years ago and could have been home to up to 70,000 people.

The subterranean complex may have been a protected space that early Christians used to escape Roman persecution.

The first underground chambers of the ancient complex were found about two years ago.

During a project to clean and conserve historical streets and houses in the Midyat district of Mardin province.

Workers on the project first discovered a limestone cave, and then a passage into the rest of the hidden city

Workers on the project first discovered a limestone cave, and then a passage into the rest of the hidden city

That said, some of the local people had already known that there were caves below Midyat, but had not known there was an entire underground city