The National park is in Altanbulag Sum in Tuv Province 90 kilometres from the Ulaanbaatar. The Mountain Range has an elevation of 1.842 meters above sea level. The Natural Reserve covers 900 square kilometres and has been taken under State Protection since 1993 to conserve biodiversity and facilitate the reintroduction of Mongolian wild horse Takhi.
Przewalski’s Horse (Equus ferus przewalskii, also known as the Takhi horses) is a rare and endangered subspecies of wild horse native to the steppes of central Asia. The Takhi became extinct in the middle of the 20th century. They then could only be found in the zoos. Special breeding programs increased their numbers. At one time extinct in the wild, it has been reintroduced to its native habitat in Mongolia at the Khustain Nuruu National Park, Takhiin Tal Nature Reserve and Khomiin Tal. Khustai or Khustain Nuruu National Park was declared reserve status (category III) for over 50,000 hectares of the Khustain Nuruu area in 1993 but after significant scientific field researches into the area it was upgraded to a national park in 1998. Khustai Nuruu National Park is located about 100 km southwest from Ulaanbaatar. It protects today Mongolian’s Takhi wild horses. There are around 350 Takhi horses in Khustai.
The park is home to 459 species of vascular plants, 85 species of lichens, 90 species of moss and 33 species of mushrooms. 44 species of mammals have been recorded, including Red deer, Mongolian gazelle, Roe deer, Wild boar, Wild sheep, Ibex, Mongolian marmots, Grey wolves, Lynx, Pallas’ cat, Red fox, Corsac fox and Eurasian badger. The 217 species of birds include Golden eagle, Lammergeier, Great bustard, Whooper swan, Black stork, Daurian partridge and Little owl. There are 16 species of fish, 2 species of amphibians, and 385 species of insects (including 21 species of ants, 55 species of butterflies, 10 species of bush crickets and 29 species of grasshoppers).