Nepal's first and most famous national park is situated in the Chitwan Doon or the lowlands of the inner Tarai. Covering an area of 932 sq. km. The park includes hilly areas of the siwalik range covered by deciduous sal forest.
A fifth of the park is made up of the floodplains of the Narayani, Rapti and the Rue rivers and is covered by dense tall elephant grass interspersed reverine forests of silk Colton (kapok), acacia and sisam trees.
Besides rhino and tiger, Chitwan also supports a great variety of flora and fauna.