Drift up the Sekonyer River on a klotok, a wooden houseboat, into Tanjung Puting National Park, in Indonesian Borneo, and walk to the feeding stations where orangutans drop out of the canopy. The journey ends at Camp Leakey, the research station founded in 1971, where some of the best-known orangutans in the world still visit. The dry season, from June to September, gives the easiest river travel and the most reliable sightings.
Up to 95% sighting chance in Tanjung Puting National Park, Central Kalimantan, Indonesia. Best months: July, August, June.
The dry season, from June to September. Rain is heavier from November to February, and trails are muddy.
Fly to Pangkalan Bun, then drive to the river port of Kumai, where the klotok boats leave for the park.
At the feeding stations of Tanjung Harapan, Pondok Tanggui and Camp Leakey, and sometimes from the boat along the riverbank.
Proboscis monkeys gather in the riverside trees at dusk, along with macaques, hornbills and, at night, fireflies.
