The Tso Kar is connected by an inlet stream at its south-west end to a small lake, Startsapuk Tso, and together they form the 9 km2 More plains pool, which is dominated by the peaks of two mountains, Thugje (6050 m) and Gursan (6370 m). From the geology of the More Plains, it can be concluded that the Tso Kar in historical times ranged up to this high valley. Until a few years ago the lake was an important source of salt, which the Changpa nomads used to export to Tibet. The nomadic settlement of Thugje is located 3 km in the north. There is a tented camp on the west bank of the lake which provides accommodation for tourists. Due to the high altitude, the climate is extreme in the winter; temperatures below -40 °C are not uncommon. In the summer the temperature rises above 30 °C, with extreme fluctuations during the day. Precipitation in the form of either rain or snow is extremely rare.