Mountain gorillas (Gorilla beringei beringei) are a subspecies of the eastern gorilla. The older males of the species develop a silver streak of hair across their backs and are known as silverbacks.

and I've seen how man's encroachment threatens the very survival of Gorilla gorilla beringei, already declared a rare subspecies and existing today only in the Virunga Mountains. Over the years ...

Virunga National Park in the Democratic Republic of the Congo (DRC) is Africa’s most biodiverse protected area, home to one-third of the world’s mountain gorillas (Gorilla beringei beringei).

What would you do if you were approached by a silverback mountain gorilla? Watch the amazing footage of this close encounter.