Introduction to Huanglong Ancient Temple: Huanglong Ancient Temple. It is said that the Yellow Dragon from the East China Sea helped Dayu to control the floods and retired. pool. Later generations commemorated Huanglong's merits and built Huanglong Temple in Huanglong Valley. The Huanglong Dongting Lake in front of the ancient temple is the largest travertine cave in China and the longest natural ice cave in China's ice age. The stalactites in the cave form a wonderful world of various shapes, and there is a seated statue of Huanglong naturally formed from galactite.