The proposed corridor between Mahananda Wildlife Sanctuary and Neora Valley National Park is an important migratory route for Asiatic elephants. It is approximately 40 km long and covers three forest ranges in Kalimpong Forest Division. The corridor passes through the southern boundary of the reserve forest areas of Darjeeling. Its buffer in the north consists of the reserve forest areas of Mongpong, Lish, Churanthi of Chel Range, Ramthi, Lethi, and Fagu blocks under the Noam Ranges. The corridor and its buffer zone cover the whole of the Mal Block, parts of Sakam in Darjeeling district, and enters West Nar Block of Neora Valley National Park of Wild Life Division-II in Jalpaiguri district.