Palaeontologist Dr Tori Herridge explores exciting subjects from Britain's history. In 1986, the remains of five mammoths were found in a quarry in Shropshire; after decades of analysis, it has been revealed that these mammoths were among the last of their species to survive in Europe. Accompanied by her old PhD supervisor and the man who first identified the mammoths, Professor Adrian Lister of the Natural History Museum, Tori walks the hills of Shropshire to find out how these mammoths died, and also what their deaths can tell us about the big question: what killed off the mammoths?