Uvs Lake is largest lake in Mongolia. It is 743 mters above the sea level, 80kilometers wide and 80 kilometers long, covering 3.350 square kilometers with clear but brackish water a land- locked Inland Sea. The Nariin, Sagil, Borshoo and Khundlen rivers enter, but none drains out. It is magnet for birds: over 220 species are recorded, including Osprey, white tailed Eagle, and Black Stork. Over 100 pairs of Spoonbill nest in the vicinity, also Great White Hero.