The Lost World was written by Arthur Conan Doyle. It as about a plateau in the Amazon jungle that has dinosaurs living in it. It is a very good book written in Victorian England. The popularity of this book can be realized by that fact that Michael Crichton has written a tribute to this book with the same name. It is a sequel to Jurassic Park. It has been developed into a movie by Steven Spielberg as well.
The Lost World is a about a group of adventures who go in search of dinosaurs in the Amazons. They survive the jungle and all the vicious tribes living in it. It is the spirit of adventure that carries them to this place and back. They bring back a live pterodactyl as proof and show it to everybody.