

"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.
Director: Virgil W. Vogel

Commander Harold 'Alan' Roberts

Margaret 'Maggie' Hathaway

Lt. Jack Carmen

Dr. Carl Hunter

Capt. Burnham

Machinist's Mate Steve Miller

Officer at Briefing / Officer on Ship (uncredited)

Radio Operator (uncredited)

Officer at Briefing (uncredited)
Man at Briefing (uncredited)