The Longyou Caves (Chinese: 龙游石窟), also called the Xiaonanhai Stone Chambers (Chinese: 小南海石室), are a group of 24 artificial sandstone caverns located at Fenghuang Hill, near the village of Shiyan Beicun on the Qu River in Longyou County, Quzhou prefecture, Zhejiang province, China. Created more than 2,000 years ago, they were not recorded in any historical documents and were rediscovered by farmers in 1992.