Longyou Caves - Wonders of the World

Longyou Caves - Wonders of the World
The Longyou Caves are a series of large artificial sandstone caverns located at Phoenix Hill, near the village of Shiyan Beicun on the Qu River in Longyou County, Quzhou prefecture, Zhejiang province, China. They are thought to date to a period before the creation of the Qin Dynasty in 212 BCE, although no trace of their construction or even their existence has been located in the historic record.