Bangda Lake (Tibetan: པང་བཏགས་མཚོ, Wylie: pang btags mtsho, THL: pang tak tso; Chinese: 邦达错; pinyin: Bāngdá Cuò),[a] formerly called Yeshil Kul,[2][b] is a glacial lake in Ngari Prefecture in the northwest of the Tibet Autonomous Region of China.

[4] Yeshil Kul is located along an ancient travel route between Ladakh and Khotan via the Keriya Pass.

[5][6] The route runs along the Longmu Co fault up to Yeshil Kul, and then heads north to the Keriya Pass, after which the valleys of the Iksu, Polu and Keriya rivers are followed.

A "Xinjiang–Tibet Highway" was laid by the People's Republic of China between the Polu town and the vicinity of the Bangda Lake during 1950–1951, prior to its annexation of Tibet.

[7][8] Jeep tracks were then made over the relatively flat, hard terrain of the Longmu Co fault, leading to Rudok.