This place is for the adventurous, accessible through Sumatra's inland wilderness, crossing rivers and going over steep hills. The area lies south of the Mount Leuser National Park, a rehabilitation center for orangutans in Bahorok, which was inaugurated in 1973. Orangutans living here are of Sumatra and Kalimantan origin.
Bohorok Orangutan Rehabilitation Station offers a virtually guaranteed sighting of young and mature orangutans. These orangutans are taught how to survive before they are release into the remote areas of Mount Leuser National Park. The eastern fringes of the park can be visited from Brastagi, but for naturalists and trekker, the best entry point is the town of Kutacane.