The park is located north of the Mahakam River and includes several lakes: Danau Maau, Santan, Besar and Sirapan.

Nevertheless, the great Borneo fires of 1982/83 destroyed large sections of the forest, and the constant encroachment of people along the eastern boundary continues to reduce the true park area.

There is a large loop walking track, with sections of elevated boardwalk to what was one of the largest trees known in the park.

Given the ease of accessibility and being adjacent to the road, this area of park is continually under pressure from the encroachment of people.

The more remote nature of this section sees the jungle in fairly good condition with little disturbance of the area.