Total in the world today there are about 800 species of mountain gorillas (all in central Africa - Uganda, Rwanda, DR Congo). In the forests of Virunga National Park, inhabited by several families that are visited by tourists. The family consists of a leader, several females and young animals. To one family can come for a visit a day up to 6 people and only 1 hour.
Gorillas do not sit in one place. Every day, the family moved to a new location. Park rangers track these movements, so a successful visit by the guest is almost guaranteed.