This is the hilarious moment a troop of monkeys shows off their river crossing skills. The Vervet monkeys can be seen crossing the river with various hops, skips, and jumps. Caught on camera by Alexander Ley, 32, from Germany, who witnessed the action in Tarangire National Park, Tanzania. Alexander said: “We were having a picnic breakfast in the middle of the bush near a riverbed when we spotted a group of vervet monkeys on the other side.