Nanda Devi Biosphere Reserve (30°05' - 31°02' N Latitude, 79012' - 80019' E Longitude) is located in the northern part of west Himalaya in the biogeographical classification zone 2B. The Biosphere Reserve spreads over three districts of Uttarakhand - Chamoli in Garhwal and Bageshwar and Pithoragarh in Kumaun. The Nanda Devi Biosphere Reserve falls under Himalayan Highlands (2a) zone of the biogeographic zonation of India. It has wide altitudinal range (1,500 - 7,817 m). It covers 5860.69 km2 area with core zone (712.12 km2), buffer zone (5,148.57 km2) and transition zone (546.34 km2). The two core zones of the Biosphere reserve i.e the Nanda Devi National Park and the Valley of Flowers National Park are inscribed as World Heritage sites in 2005. The buffer zone is inhabited by 47 villages whereas the transition zone is inhabited by 52 villages. These villages are distributed in Chamoli (Garhwal region), Bageshwar and, Pithoragarh (Kumaun region) districts.