The Mammoth is perhaps the most famous extinct prehistoric beast to have roamed the planet since the death of the dinosaurs. In this episode of Extinct, our journey in the search of the mammoth starts in modern day Mexico city with the remarkable discoveries made at Tocuila. Here, currently undergoing detailed excavation, is a graveyard containing the bodies of a family of mammoths that died about 10,000 years ago. They represent the discovery of a breed of super mammoth known as the Columbian Mammoth, and we rebuild what they were like using stunningly realistic computer graphics. For the first time we present a radical new explanation that brings another expert to Tocuila, only Peter Daszak is no archaeologist, he's a virologist.