The Cross River National Park is a national park in Cross River State, Nigeria. The Park is an important biotic reserve which contains one of the oldest rainforests in Africa. It is also one of the 25 United Nations acclaimed biodiversity hot spots in the World. Some portions of the Park lies in the Guinea-Congolian region of the lowland rainforest refugia with closed canopy and scattered emergent trees which reach a height of between 40 and 50 meters. Studies have revealed that vegetation here has evolved over 60 million years ago.
There are 119 species of mammals in the Park. These include 18 out of the 23 species of monkeys found in Nigeria (representing 78% of Nigeria’s total), 48 species of Fish and 950 species of butterflies (90% of Nigeria’s totals) among a wide array of insects.
The Park exists in two distinct, non-contiguous divisions; Oban and Okwagwo.