A helicopter crashes in the desert, and the crew winds up in the underground city of Atlantis and get mixed up in a slave revolt.

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Main Cast: Jean-Louis Trintignant, Haya Harareet, Georges Rivière, James Westmoreland, Amedeo Nazzari, Giulia Rubini, Gabriele Tinti, Ignazio Dolce, Gian Maria Volonté

Director: Edgar G. Ulmer

Writers: Ugo Liberatore, André Tabet, Remigio Del Grosso

Editor: Renato Cinquini

Cinematographer: Enzo Serafin

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