When your gorilla trekking guide yells at you to “Go! Go! Go!”, I recommend you run for your life. Because when the Rwandan silverback gorilla, who has just beat his chest like bongos, decides to pull an entire tree down on your head, it will probably hurt. Fortunately, all it did was knock some sense into us. And no, I don’t have a photo. I was too busy hauling ass to get one.