also known as Lake Lighten, is a glacial lake in Rutog County in the Ngari Prefecture in the northwest of the Tibet Autonomous Region of China. It lies in the western Kunlun Mountains to the northwest of Bangda Lake, not far from the regional border with Xinjiang. Located at an altitude of 5080 metres, it covers an area of 244 square kilometres with a maximum depth of 81.9 metres and his drainage basin contains 62 glaciers.