Bolor-Tagh is an old name for the longitudinal range in eastern Pamir Mountains (ancient Mount Imeon) extending from Kunlun Mountains in the south to the east extremity of the Trans-Alay Range in the north. Highest peaks Kongur Tagh (7649 m) and Muztagh Ata. Bolor-Tagh lies entirely in the Xinjiang province of western China. Marco Polo visited the area in 1271 during his travel to China, describing it under the name of ‘Belor’.