10 Underground cave cities & settlements
1 – Mesa Verde Cliff Palace – USA
Mesa Verde is a UNESCO World Heritage Site located in Montezuma County, Colorado and is the largest archaeological preserve in the United States. The Anasazi (Ancient Pueblo peoples) inhabited Mesa Verde between 600 to 1300 AD, though there is evidence they left before the start of the 15th century. In the late 1190s they began to build the cliff dwellings for which Mesa Verde is famous, in particular, the Cliff Palace.
https://www.heritagedaily.com/2018/05/10-amazing-ancient-ceremonial-caves-settlements/106211
