Raimona National Park is located in extreme western part of Assam, India. It is spread across Gossaigaon and Kokrajhar subdivisions of Kokrajhar district of BTR. It was declared to be National Park on 5 June 2021 by the announcement of Assam’s Chief Minister Himanta Biswa Sarma on the occasion of World Environment Day at Gandhi Mandap, Guwahati. On 09th June, 2021; it became as National Park through an Assam Gazette Notification no.FRW.02/2021/27 dtd. 08th June, 2021. It is a part of a contiguous forest patch with an area of 422 km2 (163 sq mi) covering the northern part of the notified Ripu Reserve Forest (508.62 km2 (196.38 sq mi)), which forms the westernmost buffer to Manas Tiger Reserve in the foothills of Eastern Himalaya Biodiversity Hotspot.The present Raimona National Park was originally recommended as Ripu-Chirang Wildlife Sanctuary being part of Ripu reserved forest and Chirang reserved forest being adjacent a part of it was also mooted to be within. Those were made owing to its significance for conservation of Asian elephants, gaur or Indian “bison” and golden langur, all of which have large populations in the area.It is also part of Chirang-Ripu Elephant Reserve.Raimona National Park is famous for golden langur, an endemic species (with Bhutan) which has been named as the mascot of Bodoland region. It also has Asian elephant, Bengal tiger, clouded leopard, gaur, chital, four to five species of hornbills, more than 150 species of butterflies, 170 species of birds, 380 varieties of plants and orchids. It is already on the global map being an Important Bird & Biodiversity Area.