The Namdapha National Park is the largest protected area in India and is the perfect Eastern Himalaya biodiversity hotspot. Recognized as one of the richest areas in biodiversity in India, the park harbors the northernmost lowland evergreen rainforests in the world at 27°N latitude. The area is also known for extensive Dipterocarp forests among the last great remote wilderness areas of Asia. Namdapha and its adjoining areas, is flanked by the Patkai hills to the south and south-east and by the Himalaya in the north and lies close to the Indo-Myanmar-China tri-junction.
The park resides in Changlang district of the Northeastern state of Arunachal Pradesh, bordering with Myanmar. By stretching across an area of 1985 km2 with 177 sq km in buffer zone and 1808 sq km in the core area, the park is located between the Dapha bum range of the Mishmi Hills and the Patkai range with a wide altitudinal range between 200 m and 4571 m above the sea level. The area dwells under both the Palearctic and Indo Malayan bio-geographic areas resulting in a thronging of diverse species. With increase in the altitude from tropical moist forests to Montane forests, the scenario changes to temperate forests to Alpine meadows and perennial snow. The park has extensive bamboo forests to complement the secondary forests.