Shey Phoksundo is Nepal's largest national park and covers 3,555 sq. km. Sitting astride the Dolpa and Mugu districts of western Nepal, the park was established to protect the trans Himalayan ecosystem found only in few areas of the Kingdom. The unique park includes the Kanjiroba Himal, with many peaks of over 6,000 meters, as well as the famous Shey Monastery, the Phoksundo Lake and the Langu Gorge.

The flora of the area include pine, walnut, willow, oak, poplar and cypress in the lower southern parts. In the higher reaches, pine, spruce, juniper and birch predominate. The alpine areas are vegetated by berberries, wild rose and caragana. The and trans Himalayan mountains and grassy alpine meadows to the north are almost devoid of trees but have caragana and dwarf juniper.