Wildlife is abundant and easily observed in this site. One of them can be observed easily in this area is proboscis monkeys (Nasalis larvatus), especially in the afternoon and early morning beside the river (Matan River). In addition, orangutans also can be found in this area, surrounding lowland forest at Kubang River. Other animals which can be observed also gibbons (Hylobates agilis), red-leaf monkeys (Presbytis rubicunda), long tail monkeys (Macaca fascicularis), birds, including horn-bills (Buceros,sp.) and woodpeckers, arboreal frogs other small mammals.
Kubang river has a few meters wide, with vegetation gradually changing from Nypa vegetation in mangrove ecosystem, to spectacularly rooted mangrove forest, until lowland forest. The river can be fringed for a few km by canoe, depends on the amount of seasonal rainfall. Vegetation is well developed, with large trees bending over the water and abundant epiphytes.
Kubang Hill is located part of western Gunung Palung National Park. The hill can be accessed by canoe from Batu Barat Village, which could offer good locations for a camping ground and trekking around hills. It is one of only a handful of area in the park where orangutans can be seen in the wild. The hill is notable for its diversity of habitat types, ranging from mangrove and peat swamp forest, to lowland hills forest. Other animals which can be observed in the area are gibbons, deers, turtles, birds, including horn-bills and woodpeckers.
Batu Barat Village
The village is still maintains as a traditional-look. Mostly, local people living out from river products (fishes and prawns), forest products (fruit, palm sugar, etc.) and swidden paddies. Villagers also made handicrafts, such as mat and hat, from natural row material where are taken from the park. Houses are in rows along a main road which build parallel to the river, are mostly built from wood and nypa-roofs. The river has about 150 meters wide and meander which dominated by nypa vegetation and scattered trees.