Coastal Plain (Libreville, Gamba, Loango National Park, Kango, Mayumba, Tchibanga) flat riverplains and lagoons with dense rainforest on the Atlantic coast as well the capital city and majority of the population |
Central Highlands the Cristal Mountains and Chaillou Massif with huge tracts of highland rainforest |
Jungle Interior (Franceville) the eastern region mostly bordering Republic of the Congo; more rainforest. |