Pat Boone gives this colourful, exciting story its few nauseating moments (as when he sings 'My Heart's in the Highlands'). Otherwise it's one of the very best Hollywood adventure movies, with lots of monsters, underground oceans, sinister villains, and touches which would have delighted Jules Verne himself. James Mason as usual carries his part superbly, and there are plenty of good supporting actors like Napier and Ronson. Some of the special effects are intriguing, and believe it or not there's also quite a bit of effective sexual symbolism in typical Hollywood style, which greatly enhances the syrupy romantic subplot. Watch for the ending in which the girl is blown up on a giant funnel, with close-ups of her on her back smiling orgastically.