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Uvs Lake Basin (also Uvs Nuur Basin or Ubs Nuur Basin; Mongolian: Увс нуурын хотгор, romanized: Uws nuuriin hotgor) is an endorheic basin located on the territorial border of Mongolia and Tuva, a republic of the Russian Federation. The basin is part of the Central Asian Internal Drainage Basin and is named after Uvs Lake (Uvs Nuur, Ubsu Nur), a large saline lake situated in the western part of its drainage basin and is one of the last remnants of the mammoth steppes. Uvs Lake is a shallow lake with an area of 3,350 km2 (1,290 sq mi). Its entire basin, which includes several smaller lakes, is 70,000 km2 (27,000 sq mi).