Gazetted in 1991, Batang Ai National Park shelters many protected animals. It also serves as a water catchment area for a huge artificial lake, creating the Batang Ai Hydro-electric dam. The lake extends up to the Engkari and Ai Valleys, where the scenery complements an atmosphere of peace and tranquillity.

Because of the limited facilities available within the park, the best way to see it is by arranging to be part of a longhouse tour, where you'll get a chance to meet natives of the Iban tribe and discover how they live in their communal house and how they interact non-destructively with nature.