The Parc National de Basse-Casamance, centred near Oussouye, protects a stretch of forest-savanna mosaic, mangrove channels, and freshwater swamp. It was established in 1970 and for many years offered the best forest walks in Senegal before the Casamance conflict curtailed access.
The wildlife list is strong for West Africa: red colobus monkeys, green monkeys, western chimpanzees in small numbers, warthog, bushbuck, mongoose, and over 200 bird species including the African fish eagle and martial eagle. The mangrove sections are particularly good for wading birds and herons. Visits are arranged from Oussouye or through guides based in Ziguinchor.