The "One Million Years B.C." (1966 Soundtrack) is a musical score composed by Mario Nascimbene for the British film directed by Don Chaffey. The film, set in a prehistoric world, features a blend of orchestral and tribal sounds that enhance the visual storytelling of early human life and dinosaurs. The soundtrack is notable for its dramatic themes and atmospheric compositions, which complement the film's adventurous narrative. It captures the essence of the era depicted in the movie, making it a significant part of the film's overall impact and a memorable example of 1960s film music.