KBFSC is located in the Temburong District, Brunei Darussalam, in the Ulu Temburong National Park. It lies on the west bank of the Sungai Belalong nestled in a steep-sided, densely-forested valley about five kilometres upstream from the road head at Batang Duri. The Centre is surrounded by lowland and sharp ridges, covered in mixed-Dipterocarp forest which have never been logged. It is 60 metres above sea level, and the highest point within the designated research area is Bukit Belalong (913 m.a.s.l.).s