The Lost World (1925 film)

The Lost World is a 1925 silent fantasy adventure film adaptated from Arthur Conan Doyles 1912 novel of the same name. The movie was produced by First National Pictures, a major Hollywood studio at the time, and stars Wallace Beery as Professor Challenger. It was directed by Harry O. Hoyt and featured pioneering stop motion special effects by Willis OBrien, a forerunner of his work on the original King Kong. Doyle, who also created Sherlock Holmes, appears in a frontispiece to the film, absent from some extant prints.

From a lost expedition to a plateau in Venezuela, Paula White brings the journal of her father explorer Maple White to the eccentric Professor Challenger in London. The journal features sketches of dinosaurs which is enough proof for Challenger to publicly announce that dinosaurs still walk the earth. Met with ridicule at an academic meeting at the Zoological Hall, Challenger reluctantly accepts a newspapers offer to finance a mission to rescue Maple White. Professor Challenger, Paula White, sportsman Sir John Roxton, news reporter Edward Malone who is a friend of Roxton and wishes to go on the expedition to impress his fiance, a sceptical professor Summerlee, an Indian servant Zambo, and Challengers butler Austin leave for the plateau.At their campsite at the base of the plateau, the explorers are shocked when a large rock falls, sent their way by an apeman perched on top of an overhead ledge. As the crew look up to see their attacker, Challenger spies overhead a Pteranodon mistakenly calling it a Pterodactylus killing and eating a young Toxodon which proves that the statements in Maple Whites diary are true. Leaving Zambo and Austin at the camp, they cross a chasm onto the plateau by cutting down a tree and using it as a bridge, but it is knocked over by a Brontosaurus, leaving them trapped. ........

Source: Wikipedia