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 rainforests. It dates back over 25,000 years and contains almost 400 species of plants. More famously, this “impenetrable forest” also protects an estimated 400 mountain gorillas roughly half of the world’s population, including several habituated groups, which can be tracked.