The Incredible Petrified World is a science fiction underwater exploration adventure that’s full of fifties sci-fi cinema fun. A new undersea vessel has been invented that will take passengers down to the very bottom of the deepest parts of the ocean! A group of four adventurous friends journey downward, only to have their technology fail. Fortunately, there’s a cave nearby that miraculously contains oxygen. Happy to be alive but scared of being trapped, things don’t improve when a shipwrecked man is discovered to have survived in the caverns for over a decade! The Incredible Petrified World makes good use of veteran b-movie stars John Carradine, Phyllis Coates and Robert Clarke and the adventure never stops.