Just watched this classic Hal Roach production on the TCM site. It's the story of a man and woman and how they get their previously enemy tribes together. Actually, what I just said made the movie sound simplistic which, despite the prehistoric setting, it's not. In fact, I was surprisingly enthralled by the story, the acting of Victor Mature and Carole Landis (though Ms. Landis is also good eye candy), the fights of the "dinosaurs" (actually lizards, alligators, and armadillos), and the exciting special effects concerning the volcano eruption. Roy Seawright deserves mega-kudos for that last sequence and possibly for Mature's fight with what looked like a model dinosaur worthy of Willis O'Brien. Also loved the music score that was played throughout. That score might have broken whatever monotony the slower scenes may have had. So with all that said, I'm recommending One Million B.C. for anyone interested in these old-fashioned effects movies.