Danum Valley Conservation Area, is a 438 sq km Class I Protection Forest Reserve and one of Sabah’s last strongholds of the lowland dipterocarp forest which used to cover most of northern Borneo. With tree species numbering over 200 per hectare, it is among the oldest and richest rainforests in the world.

These majestic forests with trees reaching over 60m tall provide a vital refuge to some of Sabah’s most endangered wildlife such as orang utan, Sumatran rhino, proboscis monkey and Asian elephant, as well as over 300 species of birds.

Situated in the heart of the Conservation Area, Mt. Danum, at 1,093m high, is the tallest peak and is surrounded by sub-montane forest.

Maliau Basin Conservation Area, also known as Sabah's Lost World, is a 584 sq km Class I Protection Forest Reserve and one of Malaysia's finest wilderness areas, comprising a high plateau surrounded by a formidable escarpment, and containing outstanding natural features such as the famous 7-tiered Maliau Falls and numerous smaller waterfalls.

Situated in south central Sabah, this virtually self-contained ecosystem is drained by one river only, the Maliau River, which flows out of a gorge in the south east of the Basin and forms one of the headwaters of the Kinabatangan, Sabah’s most important waterway.

Maliau contains unusual forest types including rare montane heath forest, and a distinct and diverse flora with over 1,800 species of plant so far identified. Along with the surrounding forests, it is also home to rare mammals such as the banteng, clouded leopard and Malayan sunbear and more than 275 species of bird.

Imbak Canyon Conservation Area, is situated just to the north of Maliau Basin, roughly in the centre of Sabah. The 300 sq km area encompasses a sweeping valley constituting probably the largest contiguous lowland dipterocarp forest left in Sabah, enclosed by high sandstone ridges. Imposing waterfalls can be found along the sides and at the mouth of the Canyon.

Imbak is rich in medicinal plants as well as being important as a potential botanical gene bank for forest rehabilitation. As a pristine area of forest it also forms a vital component in the biodiversity corridor linking Maliau Basin to the south and Danum Valley to the east.