"One Million Years B.C." is a 1966 prehistoric adventure film that follows the journey of a tribe of humans struggling to survive in a harsh and dangerous world filled with dinosaurs, giant spiders, and other prehistoric creatures. The story centers on Tumak, a young caveman who is banished from his tribe and must navigate the treacherous landscape alone. Along the way, he meets and falls in love with a woman from a rival tribe, who helps him to survive and ultimately leads him back to his own people. The film is notable for its groundbreaking special effects, which bring the prehistoric creatures to life in stunning detail, and for its iconic poster featuring Raquel Welch in a fur bikini. With a thrilling score by Mario Nascimbene and a memorable performance by Welch, "One Million Years B.C." remains a classic of the genre.