Wildlife ranger Aline Masika Kisamya recalls the day last year when she was on patrol in the dense forest on the flanks of Mikeno volcano, in Congo’s Virunga National Park, and came face-to-face with a buffalo. African buffaloes are notoriously aggressive and known to kill people. Kisamya froze, assessed the situation, and, calmly and quietly, began to retreat without turning her back. She wasn’t afraid, the 26-year old says: “This is what I’ve been taught to do.” Virunga, in the eastern part of the Democratic Republic of Congo (DRC), is the continent’s most diver