This exciting tale of myth and fable thrusts the crew of the U-33 submarine into a mysterious forgotten continent, where savage denizens of lost ages roam vast primeval jungles. Here, the crew finds dinosaurs, ferocious beasts of prey, Neanderthals, and monstrous reptiles who all terrorize one another – and battle the submarine crew. First in the series. "We loved, we adored, we went quite mad with Mr. Burroughs."—Ray Bradbury