The Dooars or Duars are the foothills of the eastern Himalayas in North-East India around Bhutan. Duar means door and the region forms the gateway to Bhutan from India. There are 18 passages or gateways through which the Bhutanese people can communicate with the people living in the plains. This region is divided by the Sankosh River into the Eastern and the Western Dooars. The Western Dooars is known as the Bengal Dooars and the Eastern Dooars as the Assam Dooars.

The region used to be part of a continuous stretch of dense forest. The forests were used by the elephants traditionally to migrate from Assam up to the Nepal border. Human habitation has decreased the overall forest cover but even then, Dooars remains home to some of the best forests in the region including several National Parks, Wildlife Sanctuaries and Forest Reserves. The most important and largest forests of Dooars in terms of tourist importance are Gorumara National Park, Jaldapara National Park and Buxa Tiger Reserve. There are other forest areas including parts of Baikunthapur forest division (Kathambari and Apalchand), Chapramari Wildlife Sanctuary, Neora valley National Park, Khuttimari forest, Titi forest and many others.