I'm a disaster movie fan and completist so I've been tracking this down for years, I wish I could say it was worth it. It's good for a laugh or two at the improbable idiocy of the plot but that's about the end of its worth.
Closing in on the bottom of the barrel this flick makes no sense, picking up and dropping plot points at random intervals. The villain of this thing is so sketchily drawn you have only the vaguest idea of what his motive is. That is the largest failing of the film there is no clear focus to anything.
None of the characters are compelling enough to invest in and the special effects are laughable. Not a single one is clearly drawn enough for the viewer to know who they are so you can root for them. Full of one time stars this uses them ill. Shelley Winters at least tries to give a performance but Ava Gardner and Henry Fonda, both looking the worse for wear, obviously did it strictly for the loot and are phoning it in, Henry being the worst offender.
If you're a disaster movie junkie this is a must see but for anyone else its a Grade Z mess.