There is even precedent: https://www.bbc.com/travel/article/20220810-derinkuyu-turkeys-underground-city-of-20000-people https://www.bbc.com/travel/article/2022

There is even precedent: https://www.bbc.com/travel/article/20220810-derinkuyu-turkeys-underground-city-of-20000-people https://www.bbc.com/travel/article/20220810-derinkuyu-turkey...