A patch of old-growth lowland rainforest about 45 minutes from central Balikpapan by car, featuring a canopy walkway suspended between several enormous bangkirai trees at heights up to 30 metres. The walkway gives access to the forest canopy — the most biodiverse zone in a tropical rainforest — and makes an otherwise invisible world accessible.
The surrounding trails are well-maintained and pass through forest that, while bounded by logging concessions, gives a genuine impression of Borneo's original tree cover. Hornbills, gibbons, and various raptors are regularly spotted from the canopy walkway. Go early — before 09:00 — for the best wildlife activity and before the tour groups arrive.