Tiny 2,000-year-old oasis - Crescent Lake (Dunhuang).

Tiny 2,000-year-old oasis - Crescent Lake (Dunhuang). Yueyaquan is a crescent-shaped lake in an oasis, 6 km south of the city of Dunhuang in Gansu Province, China. It was named Yueyaquan in the Qing Dynasty.