Light on spoken dialogue but heavy on thrills, this unusual Hammer Films production is set in an exciting prehistoric world. At the dawn of humanity, a violent earthquake leaves a caveman clan without a chief, forcing two brothers into a fierce competition to see who will assume leadership of the tribe. Brian O'Shaughnessy, Tony Bonner, Robert John, and former Miss Norway Julie Ege star. 95 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital mono; theatrical trailer.