Namucuo is located in the central Tibet Autonomous Region, is the second largest lake in Tibet, is also China's third largest saltwater lake. The lake is 4718 meters above sea level and has a nearly rectangular shape, with an east-west length of more than 70 kilometers, a north-south width of more than 30 kilometers, and an area of more than 1920 square kilometers.
Early scientific studies put Namucuo's maximum depth at 33 meters, but a re-measurement of the lake in the last two years has found it to be more than 120 meters at its deepest point. With a water storage capacity of 76.8 billion cubic meters, it is the world's highest-altitude large lake.