Looking into the eyes of a mountain gorilla is often described as a life-changing experience. The gorillas are completely wild but have become used to seeing a few humans after years of habituation. Many of the expert guides have been involved in this process since the beginning and are able to explain the complicated etiquette involved in meeting a giant silverback. This is an opportunity afforded only to a select few, as just eight visitors are allowed to view each group every day. Tracking through dense forest with steep slopes means that you do need to be physically fit to enjoy the excursion. If the tracking is successful, you will spend a maximum of one hour with the gorillas before returning back to camp. Sanctuary Gorilla Forest Camp is a great base, in Bwindi National Park. Children must be aged 15 and above to participate.