Established in 1984 with an area of 3,555 sq. km., Shey-Phoksundo National Park is situated in the mountainous region of Western Nepal, covering parts of Dolpo and Mugu Districts. It is the largest national park in the country.
Langtang National Park encloses two major river systems: one draining west into the Trisuli River and the other east to the Sun Koshi River. The park extends from 32 km.