Bukit Baka Bukit Raya National Park (Indonesian: Taman Nasional Bukit Baka Bukit Raya) is a national park on Borneo Island, Indonesia. It is named after two mountains: Bukit Baka, which is 1,620 meters (5,310 feet) tall, and Bukit Raya, which is 2,278 meters (7,474 feet) tall. These mountains are part of the Schwaner mountain range, located at the border of Central and West Kalimantan.

The national park is part of the Heart of Borneo conservation project.

Flora and fauna

The park has recorded 817 plant species, including those from the families Dipterocarpaceae, Myrtaceae, Sapotaceae, Euphorbiaceae, Lauraceae, and Ericaceae. Plants found only on the island include Symplocos rayae, Gluta sabahana, Dillenia beccariana, Lithocarpus coopertus, Selaginnella magnifica, and Tetracera glaberrima.

The park helps protect the homes of clouded leopards, orangutans, sun bears (Helarctos malayanus euryspilus), maroon leaf monkeys, slow lorises (Nycticebus coucang borneanus), sambar deer, and flying squirrels. Bird species in the park include the black hornbill, helmeted hornbill, common emerald dove, little cuckoo-dove, Bornean White-Bearded Gibbon, and Bornean peacock-pheasant.

Human habitation

Indigenous people in the park include the following ethnic groups: Dayak Limbai, Ransa, Kenyilu, Ot Danum, Malahui, Kahoi, and Kahayan.

Conservation and threats

In 1978, a nature reserve covering 500 km around Bukit Raya was created. The following year, the reserve was expanded to cover 1,100 km. In 1982, the Bukit Baka nature reserve was established, covering 1,000 km. After several small changes to the boundaries of both reserves, in 1992 the two protected areas were combined to form the Bukit Baka Bukit Raya National Park, covering 1,810 km.

The park has been affected by serious illegal logging since the end of the 20th century.