The Tiger Association occurs on extinct volcanoes in the Semporna Peninsula to the north of Tawau and at Quoin Hill.
There are 3 extinct volcanoes north of Tawau, namely Gunong Tiger, Gunong Bombalai and Middle Hill. Gunong Bombalai still retains the characteristic forms of a volcano with a small breached crater on its southern flank. Quoin Hill is a small steep-sided volcanic cone with a crater about 275 m in diameter breached on its eastern side.
The soils are formed on basalt lavas and include Chrome and Eutric Cambisols of the Kawa and Bombalai Families respectively.