It consists of a group of partially overlapping small stratovolcanoes and lava domes, with the highest point being 610 m (2,000 ft) Mount Malopu at the southwestern end of the range.

Kaiamu, a maar at the northwestern end of the Sulu Range, forms a peninsula with a small lake extending about 1 km (0.62 mi) into Bangula Bay.

Volcanic unrest in 2006 resulted in the creation of a vigorous new fumarolic vent, which was preceded by vegetation die-off, seismicity and dust-producing landslides.

[1] On the coastal plain west of the southwest base of the Sulu Range lies the Walo hydrothermal area, which consists of solfataras and mudpots.

[1] The fumaroles in this hydrothermal area have been used by locals for cooking food.