The Beasts from 20,000 Fathoms is a 1953 science fiction monster film from the Warner Bros, produced by Jack Dietz and Hal E. Chester. It was directed by Eugène Lourié, that stars Paul Christian, Paula Raymond, Cecil Kellaway, and Kenneth Tobey. The film's stop-motion animation special effects are by Ray Harryhausen. Its screenplay is Ray Bradbury's 1951 short story "The Fog Horn", specifically the scene where a lighthouse is destroyed by the title reptile from the past.
This film's story concerns a fictional dinosaur-like lizard, the Rhedosaurus, which is released from its frozen, hibernating state by an atomic bomb test in an Arctic Wasteland. The beast begins to wreak a path of destruction as it travels southward, eventually arriving at its ancient spawning grounds, which includes New York City. The Beast from 20,000 Fathoms was one of the early atonic monster movies, and it helped inspire a generation of creature features and directly inspired Godzilla (Gojira).