The civilised USA of the 1930s is reduced to rubble by a massive natural occurrence that requires man to live a more rudimentary, though not exactly Jurassic, existence. This could have been quite an interesting story, but instead is a rather lolling melodrama as boy meets girl, saves girl from marauding gang of hoodlums before an ending that is really quite twee. Some of the special effects at the start are decent enough (for 1933); but the story and characterisations are flat - nether Peggy Shannon ("Claire") nor Sidney Blackmer ("Martin") bring much to the party - indeed they could have…