泸沽湖
Lugu Lake is a natural lake in the Hengduan Mountain System, and has a horseshoe shape. It is bounded within geographic coordinates of and . It is located in a high plateau amidst the Xiaoliangshan hills of Western Yunnan. The Lion Mountain that surrounds the lake, which is worshipped as the goddess Gammo, is the chief deity of the Mosuo people who inhabit the area. The lake has a drainage catchment of . The lake's main storage is from rainfall and its waters display a turquoise blue colour. The south shoreline of the lake is located in Yi Autonomous region of Ningland. The lake has a length of with a width of (mean width is ) and a water spread area of ( is also mentioned) and an average depth of . The maximum depth in the lake is reported at ( is also mentioned in some references) which makes it the second deepest lake in China, after the Fuxianhu Lake. Lugu Lake is hemmed on both sides by steep mountains and partially forested slopes; it is fed by the Mosuo River and drained by the Gaizu River, which joins the Yalong River and eventually merges into the Jingshajiang River or the Yangtze River. Geologically, it is inferred as one of the youngest fault lakes in the Yunnan Plateau.