Mountain Gorilla, Silver Back in the forest. (Gorilla gorilla graueri). Silver Back (Bwenge) of the Bwenge Group. Slope of the Karisoke Volcano. Volcanoes Nat. Park. Rwanda. Elevation 2930 meters GPS : 1.481222° S / 29.505300° E Gorille de Montagne. (Gorilla gorilla graueri). Bwenge, leader de son groupe nomé Groupe Bwenge, sur le volcan Karisoke . Volcanoes Nat. Park. Rwanda. Altitude : 2930 meters GPS : 1.481222° S / 29.505300° E