The Koshi Tappu Wildlife Reserve lies on the flood plain of the Sapta-Koshi - one of the three main tributaries of the Ganges - in eastern Nepal. Roughly the shape of a rectangle 10 km wide and as long, it stretches south of the Sapta Koshi to the Indian border. It mostly consists of tall grassland with patches of khair-sissoo scrub forest and deciduous mixed forest It is set against the backdrop of Mount Makalu (8475m), the world's fifth highest mountain. The reserve offers prime habitat for a variety of wildlife. It supports the last surviving population of wild buffalo or arna. The nilgai (blue bull), chital (spotted deer), hog deer, and wild boar are some other mammals finding sanctuary in the Reserve.
