Trying to identify an episode of Tom Corbett, Space Cadet (1950-1955) in which Tom, Roger, Astro, and Dr. Dale walk through a subterranean tunnel under a moon.
In a September 1952 issue of Popular Science magazine, director George Gould shows a cutaway model that simulates shafts and tunnels beneath the moon's surface, where the cadets and doctor can be seen on a black-draped set used to create a visual effect.
Given that Gould only directed seven episodes and actress Margaret Garland (Dr. Dale) only acted in eight (unlike Thomas, Markim, and Merlin, who made over 60), I watched some episodes from 1950 to 1952 in which Gould and Garland both participated, but in none of them the cadets and Dr. Dale wore white jumpsuits but their well-known darker grey cadet coveralls with yokes and gauntlets, or the padded long-sleeve jumpsuit with padded rings and a helmet worn when exploring the surface of inhospitable planets. By the way, if they're on the moon and have descended from the cabin on the surface, they should be wearing a jumpsuit and a helmet.
One of the episodes, related to the moon, that I couldn't find was 'The Moon Ray' (unknown date), in which Gould and Garland appeared. The Moon Ray synopsis as follows:
"The crew of the Polaris are ordered to investigate a deadly ray that is melting buildings and killing citizens on Earth. They trace the source to Luna, a uninhabitable planetoid and embark on a search of the moon's surface to locate the weapon. Astro and Roger Manning find nothing but rock, sand, more rock and more sand, but Captain Strong and Dr. Dale fail to return to the ship. Worse, Dr. Dale's communicator has ceased to function."
If our heroes can't find anything on the moon's surface, something must be beneath it, so 'The Moon Ray' could be the episode I'm looking for, but I can't find any legitimate photos or footage of it.
Also, I did search about the white jumpsuits and found them in an auction. They really look alike (notice the pockets).