Mahananda Wild Life Sanctuary is situated in the Darjeeling district of West Bengal, India. It comes under Darjeeling Wild Life division and can be reached from Siliguri in 30 minutes. Sukna, the gateway to the sanctuary, is only 13 km from Siliguri and 28 km from Bagdogra Airport. The sanctuary sprawls over 159 kmÂ² of reserve forest and was started as a game sanctuary in 1955. In 1959 it got the status of a sanctuary mainly to protect the Indian Bison and Royal Bengal Tiger, which were facing the threat of extinction.