BEHIND A BARRIER OF ANTARCTIC ICE... A PARADISE OF HIDDEN TERRORS!
Navy Commander Alan Roberts is assigned to lead an expedition to Little America in Antarctica to investigate reports of a mysterious warm water inland lake discovered a decade earlier. His helicopter and its small party, including reporter Maggie Hathaway, is forced down into a volcanic crater by a fierce storm. They find themselves trapped in a lush tropical environment that has survived from prehistoric times.
Virgil W. Vogel
Director

Jock Mahoney
Commander Harold 'Alan' Roberts

Shirley Patterson
Margaret 'Maggie' Hathaway

William Reynolds
Lt. Jack Carmen

Henry Brandon
Dr. Carl Hunter

Douglas Kennedy
Capt. Burnham

Phil Harvey
Machinist's Mate Steve Miller

Kenner G. Kemp
Officer at Briefing / Officer on Ship (uncredited)

Bing Russell
Radio Operator (uncredited)
Bert Stevens
Officer at Briefing (uncredited)
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