Khorgo and Terhiin Tsagaan lake
extinct volcano-KhorgoKhorgo is located on the northern part of Khangai Mountain Range at an altitude of 2200 meters above sea level and about 700 km from UB, 280 km from Kharkhorin, and 170 km from Tsetserleg / center of Arkhangai aimak /.
Khorgo is rich in beautiful scenery of mountains, cliffs, rapid streams, rivers, lakes, extinct volcanoes, green forests and pastures, where the long-haired yaks and horses pasture.
Natural zones around Khorgo: Taiga forest, Transition between Taiga forest and grassland, Mountain Forest Steppe. This attractive landscape has high biological diversity.

Horgo mountain 1600 species of plants 46 species of mammals, 227 species of birds, 2 species of reptiles, 12 species of fish home to Roe Deer; Sibirean Deer; Wolf; Pallas Cat; Red Fox and Sibirean Marmot. Golden Eagle; Great Bustard; Saker Falcon; Black Stork; Baikal Teal and Ruddy Shelduch rule the skies.
Khorgo Mountain is an extinct volcano, which lies east of the Lake Tsagaan Nuur astonishingly beautiful lake with extremely pure fresh water. The Khorgo volcano is covered with basalt. It has been protected since 1965, fully in 1997, to safeguard spectacular mountain scenery and endangered fauna und flora.
The grasslands are rich in wild flowers notably Edelweiss /Leontopodium ochrolencum /.
Extinct volcanoes. Numerious extinct volcanoes are found in this area. Khorgo Uul is dead volcano, which lies east of Terkhiin Tsagaan Lake. The mountain is covered with basalt. The mountain enjoys State protection as a National Park of 28 square kilometers including Togoo Uul which reaches 2240 meters above sea level, and the Hill of the lake of the Terkhiin Tsagaan Nuur. The volcano crater of the Togoo Uul is 200 meters wide and 100 meters deep. The northern slope is covered with Siberian Larch (Larix sibirica ) 
LakeTerkhiin Tsagaan 
Terkhiin tsagaan lakeTerkhiin Tsagaan Lake is an astonishingly beautiful lake with relatively pure fresh water. Torrents of lava issuing from the Khorgo volcano blocked the north and south Terkh rivers, so forming the dammed lake of Terkhiin Tsagaan Lake at an altitude of 2060 meters above sea level. The lake is 16 km wide, 4-10 meters deep with its deepest point at 28 meters and over 20 kilometers in length. It flooded 61,1 square km. The lake supports Pike and other fish. Rare birds are found here
Terkhiin Tsagaan Nuur established in 1997 and was designated as a Wetland of International Importance during the Ramsar Convention in 1999.