The Lost World is an adventure and science fiction novel by British writer Sir Arthur Conan Doyle recounting an expedition to a remote plateau in the Amazon basin of South America where dinosaurs and other prehistoric animals still survive, along with a tribe of vicious ape-like creatures that are in conflict with a group of indigenous Indians. The work introduces the character of Professor Challenger, who leads the expedition, and is narrated in the first person by the journalist member of the exploration party.