The National Park covers 28 including Togoo Uul which reaches 2240 m above sea level and  Hill of Terkhiin  Tsagaan   Lake.

It has been protected since 1965, fully in 1997, to safeguard spectacular mountain scenery and endangered flora and fauna. It's surrounded by the Khangai Mountains, which reach as 3000 meters above the sea level.  Khorgo Mountain is dead volcano, which lies east of Terkhiin Tsagaan Lake.  The mountain is covered with basalt. The volcano crater of the Togoo Uul is 200 meters wide and 100 meters deep.