The forest–savanna mosaic covers a region of dissected plateaus lying between the Congo Basin on the east and the Atlantic Ocean to the west.

The Angolan Scarp savanna and woodlands lies to the southwest along the Atlantic coast, extending south from the Congo River's mouth.

[2] Mabwati is a dense dry forest community which grows on deposits of Kalahari sand in the eastern portion of the ecoregion, and extend into the adjacent Southern Congolian forest–savanna.

[2] Adam's horseshoe bat (Rhinolophus adami) and the velvet climbing mouse (Dendroprionomys rousseloti) are endemic to the ecoregion.

The forest horseshoe bat (Rhinolophus silvestris) is a limited-range species, that lives in the forest-savanna and the rainforests north of the Congo River.

[2] The western Congo worm lizard (Monopeltis guentheri) and Cambondo screeching frog (Arthroleptis carquejai) are endemic to the ecoregion.