"One Million Years B.C." is a 1966 British adventure film directed by Don Chaffey. The movie is set in prehistoric times and follows the story of a caveman named Tumak, played by Raquel Welch, who is exiled from his tribe. He encounters various prehistoric creatures and eventually finds a new tribe, leading to conflicts and challenges. The film is notable for its special effects and the portrayal of dinosaurs, created by Ray Harryhausen. Although it takes creative liberties with historical accuracy, it has become a cult classic, particularly for its iconic scenes and Raquel Welch's performance in a prehistoric bikini.