Lake Manasarovar (Sanskrit: मानसरोवर, Hunterian: Mānsarovara) also called Mapam Yumtso (Tibetan: མ་ཕམ་གཡུ་མཚོ།, Wylie: ma pham g.yu mtsho, THL: ma pam yu tso; Chinese: 瑪旁雍錯; pinyin: Mǎ páng yōng cuò) locally, is a high altitude freshwater lake near Mount Kailash in Burang County, Ngari Prefecture, Tibet Autonomous Region, China. It is located at an elevation of 4,600 m (15,100 ft), near the western trijunction between China, India and Nepal. It overflows into the adjacent salt-water lake of Rakshastal via the Ganga Chhu. The sources of four rivers: Indus, Sutlej, Brahmaputra, and Karnali lie in the vicinity of the region.
The lake is sacred in Hinduism, Buddhism, Jainism and the Bon religion. People from India, China, Nepal and other countries in the region undertake a pilgrimage to the region. The pilgrimage generally involves trekking towards Lake Manasarovar and a circumambulation of the nearby Mount Kailash.