The Nam Co Lake, “Heavenly Lake” in Tibetan, is located in northwest Damxung County. With an altitude of 4,718 meters, it is the highest and largest salt lake of the region. In the tertiary era, the Nam Co emerged in a huge basin caused by crustal movement in the Himalayas. Running over 30 km from north to south and over 70 km from east to west, the Nam Co covers a total area of more than 1,940 square km (1961)