Nagqu Prefecture
East Nyenchen Tanglha, located in Nagqu Prefecture, Chamdo and Nyingchi Prefecture, marks the water divide between the Yarlung Tsangpo to the south and the Nak Chu river (which becomes the Nujiang and Salween in its lower reach) to the north. The rugged and heavily glaciated range counts more than 240 peaks over , culminating with Sepu Kangri (6,956 m) which has a 2,213 m topographic prominence and is away from a higher point.