Formerly known as Mungkan Kandju National Park, this large park stretches from the McIlwraith Range foothills, between the Archer and Coen rivers, and features open eucalypt woodlands, melaleuca swamps and a variety of rainforest types.

Oyala Thumotang National Park (CYPAL) is a living cultural landscape, rich in significance for the Aboriginal Traditional Owners—the Wik Mungkan, Southern Kaanju and Ayapathu peoples. Over many thousands of years, they have hunted and gathered the rich resources available to them for food and materials. Today the park also has important value as a wilderness area for visitors seeking quiet and intimate contact with nature.

The 381,000ha area, mostly covered in dry open eucalypt woodlands and melaleuca swamps, extends from the McIlwraith Range in the east to the Archer River in the west. The Archer and Coen rivers, which have their sources in the rainforest-clad McIlwraith Range, are major features of the park. The braided channels of the Coen River are fringed with deciduous vine thickets while rainforest lines the Archer River. These riverine areas are important wildlife corridors. Widespread flooding occurs in the wetter months but in the dryer months stream flow ceases, leaving large, permanent waterholes and lagoons.