The sub-montane and montane forests of Cross River National Park

The region bounded by the Cross River in Nigeria and the Sanaga River in Cameroon is considered an important center of plant diversity due to its speculated isolation during the Pleistocene era. The ecotone of unbroken and little-disturbed forest from 150m to 1,700m is rare in Africa and an important feature of the Okwangwo Division of Cross River National Park. Protection of these forests on the slopes of Cross River National Park is essential to maintain a continuous flow of safe and sustainable water supplies for local communities.