823-417 - Aerial view of Mount Visoke (Mount Bisoke), an extinct volcano straddling the border of Rwanda and Democratic Republic of the Congo (DRC) showing crater lake, with Mount Mikeno in background, Virunga Volcanoes, Great Rift Valley, Africa

823-408 - Aerial view of Mount Visoke (Mount Bisoke), an extinct volcano, straddling border of Rwanda and the Democratic Republic of the Congo. with Mount Mikeno in background, Virunga Volcanoes, Great Rift Valley, Africa

823-409 - Aerial view of Mount Karisimbi, a dormant volcano in the Virunga Mountains on the border between Rwanda and the Democratic Republic of Congo (DRC), flanked by Mount Mikeno to the north, Mount Bisoke to the east and Mount Nyiragongo to the west, Great Rift Valley, Africa