Definition of terai
Chitwan is located in the Terain belt of Nepal, consisting of Muddy grassland, forest, and evergreen wildlife, even accounting for Royal Bengal Tiger.
Rapti is the only river flowing South to North, in Nepal. It support wildlife and vegetation in the greater region of Sauraha, Chitwan
Tharu community accounts for major population in the region of Chitwan. They are considered the ethnics of the Terai region.