Sarawak's biggest lake, called Loagan Bunut by the local Berawan people, is the State's largest natural lake, covering 650 hectares. The lake is extraordinary due to its water level that fluctuates throughout the year.

Loagan Bunut is connected via narrow channel with Baram river and Tinjar river, as the water level in the Tinjar and Baram rivers drop sufficiently, the flow in the Bunut river is reversed and the lake begin to drain in between Feb and May. The lake shrinks to nothing and you can walk on great expanses of dry mud flats!

Over the centuries, the Berawans have developed their own method of fishing called selambau in which they literally scoop up the migrating fish as the water levels change.

No matter what the water level, the lake and its surroundings provide fascinating scenery and are vibrant with forest life. The park is an ideal spot for bird watchers. The lake and surrounding peat forests abound with large birds such as darters, egrets, herons, bitterns, hornbills, and kites as well as a host of smaller birds.