The Lost World - a novel by Arthur Conan Doyle, a British writer and medical doctor. He created the characters of Sherlock Holmes and Dr. Watson. The Sherlock Holmes stories are considered milestones in the field of crime fiction.
It is a novel concerning an expedition to a plateau in the Amazon basin of South America where prehistoric animals still survive. 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.