Odzala-Kokoua National Park

Odzala-Kokoua is the oldest national park in Central Africa, a UNESCO World Heritage Site since 1988, and a landscape of extraordinary biological richness. Ancient volcanic soils over the Cuvette-Ouest have produced a terrain of rolling hills, dense evergreen rainforest, and swampy valleys threaded with streams that eventually feed the Congo River system. The park covers approximately 13,500 square kilometres — an area roughly the size of Wales — making it one of the largest protected areas in the Congo Basin.

The forest is exceptionally biodiverse — forest elephants, western lowland gorillas, and chimpanzees move through the canopy in social groups that researchers have studied for decades, while hippos and crocodiles occupy the streams and the bais, natural forest clearings where elephants and other large animals gather for mineral-rich mud. What is remarkable about Odzala is the density of these populations: the forest elephants here constitute one of the last viable populations of this critically endangered species in all of Africa, and the gorilla groups have been habituated to human observers in ways that make sighting them more reliable than in most forest parks.

From the air the landscape is a mosaic: forest covering the hills, savanna cutting across the valleys, and riparian forests tracing every watercourse. This patchwork is what makes the biodiversity so rich — each habitat type reinforces the others, and the transitions between them are where the most wildlife activity concentrates. The bais are especially significant: these forest clearings, maintained by elephants and other large mammals, are among the best places in the park to observe wildlife at close range.

Most visitors follow old logging roads and forest trails, and the experience of moving through this forest is unlike any savanna park: you hear primates before you see them — the contact calls of western lowland gorillas carry through the canopy at dawn — and every rustle in the undergrowth demands attention. The gorillas of Odzala are western lowland gorillas (Gorilla gorilla gorilla), which are notably more adaptable than the mountain gorilla and can be tracked with a reasonable chance of success. The habituated groups at Odzala allow approaches that would be impossible with unhabituated animals.

The park is one of the most important biodiversity sites in Central Africa. Odzala was established in 1935 and inscribed on the UNESCO World Heritage List in 1988, with buffer zones added later as the park was extended. Access is typically by light aircraft from Brazzaville, and visits are organised through one of a small number of operators working with local communities — an arrangement that channels tourism revenue directly to people who might otherwise depend on bushmeat hunting or logging.

The experience is deliberately unhurried — early morning walks in the forest when the light is soft and the animals are most active, afternoon boat trips on rivers whose surfaces give no hint of the crocodiles below, evenings listening to the forest cacophony of frogs and insects. The forest moves at its own pace, and the visitor who accepts that rhythm finds Odzala one of the most rewarding wildlife destinations on the continent. There are no guarantees in forest wildlife, but the probability of a close gorilla encounter in a setting of genuine wilderness is as high here as anywhere.

One of the last viable populations of forest elephants (Loxodonta cyclotis), a critically endangered species, in an accessible and well-managed park.

Reliable western lowland gorilla tracking in a forest setting very different from the mountain-gorilla parks of Rwanda and Uganda.

UNESCO World Heritage status since 1988, confirming its global conservation significance and long-term institutional commitment.