The Republic of Congo has seemingly endless tropical forest and fingers of moist savannah covering its interior.

Its largely pristine northern rainforest is the heart of the Congo Basin, the world’s second largest expanse of tropical rainforest. Aside from a host of biodiversity, it holds the majority of the world population of western lowland gorillas.

Rivers such as the Sangha, Mambili and the mighty Congo drain this basin and provide a means of exploration through dense forests and access to remote national parks such as Odzala-Kokoua, and Nouabale-Ndoki. It is in these areas that endemic wildlife flourishes and traditional forest dweller cultures persist.

Equatorial forest covers much of Congo's landscape. These forests form part of the larger Congo Basin. More than 400 mammal species, 1,000 bird species, 700 fish and nearly 10,000 plant species, of which 3,000 are found nowhere else, have been recorded in Congo. The country's remote northern forests harbour the highest known gorilla densities, including an estimated 125,000 western lowland gorillas. Other large mammals include forest elephant, forest buffalo and the bongo.