![A high quality map of Derinkuyu, an ancient, underground city that was found in Turkey. It's 60 meters deep (200ft) and could shelter up to 20,000 people. It was discovered when a A high quality map of Derinkuyu, an ancient, underground city that was found in Turkey. It's 60 meters deep (200ft) and could shelter up to 20,000 people. It was discovered when a](https://i.redd.it/bwnhqg88gvo51.jpg)
A high quality map of Derinkuyu, an ancient, underground city that was found in Turkey. It's 60 meters deep (200ft) and could shelter up to 20,000 people. It was discovered when a
![MedievalEngineers on X: "Who is engineer enough to recreate the underground city of Derinkuyu? https://t.co/AJ1QwQ2tmj https://t.co/aX5V8YtDC3" / X MedievalEngineers on X: "Who is engineer enough to recreate the underground city of Derinkuyu? https://t.co/AJ1QwQ2tmj https://t.co/aX5V8YtDC3" / X](https://pbs.twimg.com/media/C8E63jqXQAAi32q.jpg)
MedievalEngineers on X: "Who is engineer enough to recreate the underground city of Derinkuyu? https://t.co/AJ1QwQ2tmj https://t.co/aX5V8YtDC3" / X
![The Derinkuyu multi-level underground city in Turkey. Built initially by the Phrygians in the 8th–7th centuries BCE, it was then expanded by the Christian inhabitants and was fully formed in the Byzantine The Derinkuyu multi-level underground city in Turkey. Built initially by the Phrygians in the 8th–7th centuries BCE, it was then expanded by the Christian inhabitants and was fully formed in the Byzantine](https://i.redd.it/4i9gw2kx8di71.jpg)