Named after the third King of Bhutan, it is the biggest national park in Bhutan which covers almost the entire district of Gasa. Established in 1974 it encompasses 4329 sq km of area which has elevation ranging from 1400 to 7000m and covering all the climate zones. Park has a human population of 6500 people who sustain through agriculture and animal husbandry. 37 species of mammals are provided sanctuary in the park which include several endangered and vulnerable species. Park is a delight for bird watchers as well as it has around 300 species of birds. Some of the major trekking routes pass through the park. It is also the home of a lot of herbs which are used in Bhutanese medicines.