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.

Cast:Jock Mahoney, Shirley Patterson, William Reynolds, Henry Brandon, Douglas Kennedy, Phil Harvey,

Genre:Adventure, Fantasy, Science Fiction,

country:United States of America,

Production:Universal International Pictures,