The Bwindi Impenetrable National Park lies in southwestern Uganda on the edge of the Rift Valley.  Its mist-covered hillsides are blanketed by one of Uganda's oldest and most biologically diverse rainforest, which dates back over 25,000 years and contains almost 400 species of plants.  More famously, this "impenetrable forest" also protects an estimated 460 mountain gorillas - including several habituated families. 

This biologically diverse region also provides shelter to a further 120 species of mammal, including several primate species such as baboons and chimpanzees, as well as elephants and antelopes.  There are around 350 species of birds hosted in this forest, including 23 Albertine Rift endemics.