|The Virunga volcano range, as seen from the Space shuttle Endeavour|
|Lake Edward, as seen from the western escarpment of the Albertine Rift Valley|
But when did the Virunga mountain gorillas settle on the cold, windy volcanic slopes that now connect the two sides of the Rift? Until 100,000 years ago the volcanoes were far too active for this to have been a viable habitat. Could it be they were on their way back to the Congo Basin from the forests of the eastern escarpment, and are the decedents of Bwindi gorillas? We will probably never know the answer.