With the Sarawak region of Borneo sheltering several of the world's most endangered species, Batang Ai National Park is one of the largest protected areas in the region, providing more than 3,800 square miles (10,000 square km) of habitat to both orangutans and other rare and endangered species.
Five jungle trails ranging in length from one to five miles (1.8 to 8.2 km) take visitors through pristine primary forest interspersed with a few areas of old secondary forest. With one of the highest concentrations of orangutans in Central Borneo, sightings are relatively common. Visitors might also see (or hear) gibbons, hornbills, and langurs.
A park guide is required on all trails at all times.