Namtso, or Lake Nam, is one of the three holy lakes in Tibet Autonomous Region and should not be missed by any traveler to Tibet. In Tibetan, Namtso means "Heavenly Lake." It is famous for its high altitude and beautiful scenery. The second largest salt lake in China, Namtso covers 1,920 square kilometers and is also the second-highest salt lake in altitude in the world at an elevation of 4,718 meters above sea level.