This is a long travelling time excursion for the hardcore peat enthusiasts. You will experience the environment of a tropical peat swamp forest which is the Ulu Sebuyau National Park (NP). The south – western corner of the national park can be reached by 4WD vehicles from Kuching via Simunjan town in about two and a half hours. The Ulu Sebuyau NP is located in the Samarahan Division i.e. at the lower part of the Batang Lupar river which is very famous for the abundance of crocodiles. The area is accessible by ex-logging road from Pantu or via Kg. Kepayang. The park is about 18,287 hectares in size and comprises of mixed peat swamp forest, nipah and mangrove forest along the river bank. The Sebuyau River is the main river system which passes through the park from the southeast to the west parts of the park. Being peat land area, most of the park is inundated by a high water table almost all year round especially those areas along the Sebuyau River.
Some of the dominant tree species include Gonystylus spp., Shorea spp., Dactylocladus stenostachys, Parastemon urophyllum and Mezzetia leptopoda. There are a few totally protected animals that inhabit the parks and these include Orangutan (Pongo pygmaeus), Proboscis monkey (Nasalis larvatus), Banded langur (Prebytis melalophos chrysomelas), Rhinoceros hornbill (Buceros rhinoceros), Black hornbill (Anthracoceros malayanus), Wrinkle hornbill (Rhyticeros undulatus) Pied hornbill (Anthracoceros coronatus) and Grey-headed fish eagle (Ichthyophaga ichtyaetus). The area is also a habitat for varieties of migratory birds.