The Valmiki Tiger Reserve forms the eastern most limit of the Himalayan Terai forest in India, which is the only tiger reserve of Bihar. Situated in the Gangetic Plains bio-geographic zone of the country, the forest has combination of bhabar and terai tracts. Boulder and pebble deposits by the Himalayan Rivers in the foothills characterize the Bhabar tract, while the finer sediment deposits feature terai lands.
The Valmiki National Park and Wildlife Sanctuary lie in the north-western most West Champaran district of Bihar. Name of the district has been derived from two words Champa and Aranya – meaning Forest of Champa trees. Geographically, it is situated between 830 50’ and 840 10’ E longitude and between 270 10’ and 270 03’ N latitude.
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