Yaodong-in Shaanxi province, China- is an human excavated caves and it has more than 40 million people..Can you believe it? History The historian in china believe that these cave house dwelling started from Xia Dynasty ( 2070 – 1600 BC ). Han dynasty (-206 to 220), and dynasties Sui ( 581 to 618 ) and […]
40 Million People Live In Yaodong Caves -China
![beautiful-cave-house-in-china beautiful-cave-house-in-china](https://2il.org/wp-content/uploads/2012/06/beautiful-cave-house-in-china-150x150.jpg)