Buses leave from Danum Valley Field Center office in Lahad Datu on Mondays, Wednesdays, and Fridays at 15:00. They prefer it if people go there the day before, or before noon to book a place. One way ticket costs 65 ringit. It is also possible to charter a car, that can take four people for 350 ringit.
Go and have a look at an ancient burial site across the Segama River. Permission from the management is advisable although you may go without it.
There are various types of accommodation offered, from camping at a camping ground, to modest rest houses overlooking the vast rainforest.