Explanation: Valmiki Tiger Reserve forms the eastern most limits of the Himalayan Terai forests in India and is the only tiger reserve of Bihar.

• Situated in the Gangetic Plains bio-geographic zone of the country, the forest has a combination of bhabar and terai tracts.
• Valmiki Tiger Reserve lies in the north-western most portion of West Champaran district of Bihar.
• The name of the district has been derived from two words Champa and Aranya meaning Forest of Champa trees.

Source: FORUMIAS