Ulaagchnii  Khar Lake is located in the Zavkhan aimag (province) in western Mongolia. Khar Lake occupies a dale in the Khangai Mountains to the East from the Great Lakes Depression. The Ulaagchnii khar lake is 110 km from the Aimag center and 80 km from Erdenekhairkhan soum.

Ulaagchnii Khar Lake has been protected as Strictly Protected Area since 2010.  This lake is fresh water lake and one of the most beautiful lakes of the country. We can see amazing sand dunes in the southern and northern parts of the lake. The lake is 23.9m long and 3.5m wide in average. Depth of the lake is 47m in the west 23-30m in the east and the deepest point is 57m near the Gatsaa. There are 2 big and small island called “Small and Big Avgash” in the middle of the lake. Great Avgash is quite sandy and suitable place for the roedeer for their rebirth in springs, they habitat in the mountain in the autumn. Shoreline of the lake is rocky and has a lot of different peninsulas and bays that penetrate into the lake water. On the bottom of the lake, there are sand and mud and gravel, and some water plants occur on the shallow parts of the lake. The clarity of the lake is 8m and colors are seen as green and blue emerald. Some migratory birds such as Whooper swan, Greylag goose, duck and others come to the lake in summers and other mammals such as deer, roe deer, fox, wolf, corsac fox cat, and marmot are seen near the lake. Along the shoreline of the lake, there are many eye-catching places.