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. The cavern sequences were shot at
Colossal Cave in
Tucson, Arizona.
Phyllis Coates was never paid for her performance. Warren had a monster suit built to use in the film, but "it ended up looking too bad even for Warren", 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!"
Reception 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." 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". 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." ==See also==