The Incredible Petrified World (1959)

In the heart-pounding adventure of The Incredible Petrified World, four intrepid explorers find themselves plunged into the abyss when their deep-sea diving bell's support cable frays and snaps. Left to navigate the depths of the unknown, they are presumed lost by the rest of their crew, who abandon any hope of their survival. Emerging from the confines of the diving bell, our adventurers stumble upon a labyrinth of underwater caverns, their only hope for survival. Their isolation is disrupted when they cross paths with a shipwreck survivor, a lonely figure who claims to have been trapped in this submerged maze for a staggering 14 years. His bleak proclamation—that there is no escape—only rings true for the explorers after a treacherous trek to a volcanic vent, the lifeline supplying the caverns with precious oxygen. Meanwhile, back on the surface, the creator of the doomed diving bell, Prof. Millard Wyman, grapples with guilt and determination. The veteran scientist learns of a second diving bell, identical to the lost one, offering a glimmer of hope. As he prepares to venture once again into the unfathomable depths, the question remains: Will he be their savior, or will he too become a prisoner of the incredible petrified world?

The Incredible Petrified World is an adventure movie featuring John Carradine and directed by Jerry Warren.

The Incredible Petrified World is currently streaming for free (ad-supported) on DistroTV and Public Domain Movies and it's also available on Cultpix, FilmBox+ and IndieFlix.

It is also possible to buy The Incredible Petrified World on Amazon Video.