The Gobi Lakes Valley is about 500 km west-to-east, and 150 km north-to south, at elevations of 1,000-1,400 meters. The region is desert steppe, with rivers from the Khangai Mountains on the north providing most of the water to the lakes. On the south the region is bounded by the Gobi-Altai range, the eastern-most extension of the Altai. A chain of shallow, saline lakes include Böön Tsagaan Lake (Lake Buuntsaagan), Taatsiin Tsagaan Lake, Adgiin Tsagaan Nuur, and Lake Orog. The lake's depths fluctuate with the variable precipitation. Some have large wetlands where the waters recede.