The Incredible Petrified World

Professor Millard Wyman sends a crew of two men, Paul Whitmore and Craig Randall, and two women, Lauri Talbott and Dale Marshall, down to ocean depths never before explored. A technical problem during the launch causes the diving bell to break free of the cable connecting them to the surface and it loses contact. The mission is believed lost.

The crew survive, don their scuba gear and leave the bell. Instead of reaching the surface, they surface in a cavern. They explore the cave and find a skeleton, then a disheveled old sailor named Matheny who tells them that he and another sailor suffered a shipwreck fourteen years prior and has been living in these caves ever since. He claims there is no way out and a volcano provides air from the surface.

Meanwhile, up on the surface Prof. Wyman's younger brother builds another bell and launches it in an attempted rescue mission. However, with the old man in the cave starting to leer lecherously at the women, and the volcano growing more unstable, the second mission may not find them in time. The old man reveals to the women that he murdered the other sailor years ago, increasing their apprehension. Just as he is about to assault one of the girls, the volcano erupts and the old man is crushed under falling rocks. The stranded crew of the diving bell make their way up toward the surface and are rescued.

In an interview, star Robert Clarke said that the cinematographer was a well-known Hollywood cameraman who used the pseudonym "Victor Fisher" to avoid trouble with the union for taking a job on a non-union picture.^{[citation needed]} The cavern sequences were shot at Colossal Cave in Tucson, Arizona.^[6] Phyllis Coates was never paid for her performance.^{[citation needed]}

Warren had a monster suit built to use in the film, but "it ended up looking too bad even for Warren",^[7] so the suit was scrapped. The ad line retained the mention of the monster however, stating "A Nightmare of Terror in the Center of the Earth with Forgotten Men, Monsters, Earthquakes and Boiling Volcanos!"^[8]

The film was completed around March 1957. It remained unreleased for two-and-a-half years until it was put on the bottom of a double feature with another of Warren's films, Teenage Zombies, first showing on November 12, 1959,^[1] later released on April 16, 1960.^[5]

Thomas Reddy in the Los Angeles Examiner commented "In a film of this type, you'd expect a monster or two. But no, not one teensy-weensy monster. The closest thing to it is a bearded bum found living in the cavern....it's incredible that for more than a hour, nothing the least bit exciting happens."^[7] The film opens with some stock footage showing a shark battling, and tearing apart, an octopus (perhaps these were the monsters spoken of in the ad line).

Bill Warren said "The film is so uneventful that it's puzzling as to why it was ever made....it has no possible reason for existence....there is at least one zombie in Teenage Zombies".^[7] He goes on to state "The film may have taken an entire week to shoot, and Carradine probably did all his work in one day."^[8]

• List of American films of 1959
• List of films in the public domain in the United States

• The Incredible Petrified World at IMDb
• The Incredible Petrified World is available for free viewing and download at the Internet Archive
• The Incredible Petrified World at AllMovie
• The Incredible Petrified World at Rotten Tomatoes