In the late 1940s, a small pack of wolves crossed the ice of Lake Superior to the island wilderness of Isle Royale, creating a perfect laboratory for a long-term study of predators and prey. Mech, a graduate student at the time, began research and would eventually became an internationally renowned wolf expert. Here Mech recounts three summers and winters he spent on the isolated outpost of Isle Royale National Park, tracking and observing wolves...