After a bit of a contretemps, "Tumak" (John Richardson) is kicked out of his prehistoric tribe and left to fend for himself. Fortunately, after a few near misses with some larger-than-life creatures, he encounters "Loana" (Raquel Welch) who lives with her people by the seaside. Not everyone likes him though - not least "Payto" (William Lyon Brown) who has eyes on the prize for himself. The plot, the acting, the dialogue - well, who cares? That's all drivel from start to finish. What rescues it entirely from the cutting room floor (where much of this belongs) are the visual effects from the master Ray Harryhausen. Stop motion at it's best - dinosaurs and pterodactyls that, even if they are made of polystyrene and/or papier-mâché easily out-perform the entire human cast. Raquel Welch is just an ichthyolite out of water and the usually more respectable Robert Brown looks faintly ridiculous in his best furs as "Akhoba". The ending comes not a moment too soon, but sadly doesn't really features the stars of this film - the dinosaurs!