The volatile Professor Challenger leads an expedition to a remote plateau in the Amazon basin, where prehistoric life has survived in isolation for millions of years. The explorers encounter living dinosaurs, ape-men, and a landscape that time forgot, fighting for survival in a hostile and wondrous environment. This adventure novel breaks away from the drawing rooms of London to explore the thrill of scientific discovery and the raw power of nature. It is a pioneering work of science fiction that ignites the imagination with the possibility of the unknown.