Namdapha National Park has perhaps the richest diversity of flora and fauna in the Indian Subcontinent. This is because of its biogeographical location within the Indo-Chinese subregion and its great altitudinal variation, from 4,500 meters at Daphabum, highest point, to 200 meters in the lowest valleys. The park is largely mountainous and is drained by the noa-Dehing, Deban and Namdapha rivers.
