Manas National Park
In 1985, the Manas Wildlife Sanctuary was inscribed as World Heritage Site. In 1989, Manas acquired the status of a Biosphere reserve. It extends over an area of 2837 Sq. Km from Sankosh river in the west to Dhansiri river in the east, with a core area of 500 Sq. Km. of the National park, which declared in 1990.