Uvs Lake (; ) is a highly
saline lake in an
endorheic basin -
Uvs Nuur Basin in
Mongolia with a small part in
Russia. It is the largest lake in Mongolia by surface area, covering 3,350 km² at 759 m above sea level. The northeastern tip of the lake is situated in the
Tuva Republic of the
Russian Federation. The largest settlement near the lake is
Ulaangom. This shallow and very
saline body of water is a remainder of a huge saline
sea which covered a much larger area several thousand years ago.