Action Music Sci-Fi Western
When the ancient continent of Mu sank beneath the ocean, some of its inhabitant survived in caverns beneath the sea. Cowboy singer Gene Autry stumbles upon the civilization, now buried beneath his own Radio Ranch. The Muranians have developed technology and weaponry such as television and ray guns. Their rich supply of radium draws unscrupulous speculators from the surface. The peaceful civilization of the Muranians is corrupted by the greed from above, and it becomes Autry's task to prevent all-out war, ideally without disrupting his regular radio show.
Directed by
Otto Brower, B. Reeves Eason
Frankie Darro
Frankie Baxter
Gene Autry
Gene Autry
Wallace MacDonald
Wheeler Oakman
Lord Argo
Edward Peil Sr.
Cooper (as Edward Piel Sr.)
Smiley Burnette
Oscar (as Lester 'Smiley' Burnett)
Dorothy Christy
Queen Tika
Warner Richmond
Rab
Charles K. French
Mal
J. Frank Glendon
Prof. Beetson (as Frank Glendon)
Betsy King Ross
Betsy Baxter
Peter Potter
Pete (as William Moore)
Jack Carlyle
Saunders

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