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Genre: Action / Horror /  more » User Ratings: 4.7 (228 votes)  more »   Production Co: FOR SUBSCRIBERS ONLY Distributor: FOR SUBSCRIBERS ONLY Summary: The U.S. government has been using deep caves in Central America as bases for a special type of radio...  more »

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Filmmakers: Don Sharp - Director, Ken Barnett¹ - Writer (story), Christy Marx - Writer, Robert Vincent O'Neill - Writer, Robert D. Bailey - Producer, Sandy Howard - Producer, Virgil L. Harper - Cinematographer, Denny Jaeger - Composer, Michel Rubini - Composer, John R. Bowey - Editor  more »

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