Shigatse or Rikaze, Shikatse, Zhigatsey, is the second largest city in Tibet Autonomous Region, People's Republic of China, with a population of 80,000, about 250 km (160 mi) southwest of Lhasa and 90 km (56 mi) northwest of Gyantse. The city is located at an altitude of 3,840 metres (12,600 ft) at the confluence of the Yarlung Zangbo (aka Brahmaputra) river and the Nyang River (Nyanchue) in west Tibet and was the ancient capital of Ü-Tsang province.