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The Lost World is a science fiction novel by British writer Sir Arthur Conan Doyle, published by Hodder & Stoughton in 1912, concerning an expedition to a plateau in the Amazon basin of South America where prehistoric animals still survive. It was originally published serially in the Strand Magazine and illustrated by New-Zealand-born artist Harry Rountree during the months of April–November 1912. The character of Professor Challenger was introduced in this book. The novel also describes a war between indigenous people and a vicious tribe of ape-like creatures.