Bwindi Impenetrable National Park is located in southwestern Uganda in East Africa. The park is part of the Bwindi Impenetrable Forest, and is situated along the Democratic Republic of Congo border next to the Virunga National Park and on the edge of the western Great Rift Valley. It comprises 331 square kilometres (128 sq mi) of jungle forests and contains both montane and lowland forest and is accessible only on foot. The Bwindi Impenetrable National Park is a UNESCO-designated World Heritage Site.
The forest is one of the richest ecosystems in Africa, and the diversity of species is a feature of the park. The park provides habitat for some 120 species of mammals, 348 species of birds, 220 species of butterflies, 27 species of frogs, chameleons, geckos and many endangered species. Floristically Bwindi is amongst the most diverse forests in East Africa, with more than 1,000 flowering plant species including 163 species of trees and 104 species of ferns. The northern (low altitude) sector is rich in species of the Guineo-Congolian flora. These include two species internationally recognised as endangered, Brown mahogany (Lovoa swynnertonii) and Brazzeia longipedicellata. In particular the area shares in the high levels of endemisms of the Albertine Rift.
The park is a sanctuary for colobus monkeys, chimpanzees and many birds (such as hornbills and turacos). It is perhaps most notable for the 340 Bwindi gorillas, half the world's population of the critically endangered Mountain Gorillas. There are four habituated Mountain Gorilla groups open to tourism: Mubare; Habinyanja; Rushegura near Buhoma; and the Nkuringo group at Nkuringo.