Torquay has numerous tourist attractions, including Kents Cavern, Britain's most important Stone Age site, which was home to early man for some 40,000 years. The floor is composed of several strata, with remains indicating the prehistoric coexistence there of humans and now-extinct animals. The Rev. J. McEnery explored the cave between 1825 and 1829, and put forth the coexistence theory. The cave was extensively explored from 1865 to 1880 by William Pengelly, who found evidence to support McEnery's hypothesis. The caves have attracted many famous people, among them Agatha Christie, Beatrix Potter, King George V and Haile Selassie who was so impressed with his visit that he gave his guide, Leslie Powe a gold sovereign.