Gangdise
The Gangdise mountains stretch across southern Tibet, north of the Himalayas and the great valley of the Yarlung Tsangpo. Their ridges form part of the high country around Ngangla Ring Tso, a saline lake of the western plateau. Seasonal snow and glacier melt from the ranges help feed the lake, together with rainfall and groundwater. Beyond the mountains lie other enclosed basins whose waters collect without reaching the sea.