Namtso is the largest lake of the Tibet Autonomous Region. It is the second largest saltwater lake in China and also the highest saltwater lake in the world with an elevation of 4,718 meters. It covers an area of 1,920 square kilometers with the length of 78.6 kilometers, the average width of 24.4 kilometers and the maximum width of 50 kilometers. The average depth of the lake is 35 meters and the maximum depth is 39.2 meters. The lake is clear and blue with a transparency of more than 9 meters.