Storyline:
Three men and a woman crash-land in a deep crater in Antarctica, where they find a prehistoric world.

Cast:

Jock Mahoney Commander Alan Roberts

Shirley Patterson Margaret Hathaway (as Shawn Smith)

William Reynolds Lt. Jack Carmen

Henry Brandon Dr. Carl Hunter

Douglas Kennedy Capt. Burnham (as Douglas R. Kennedy)

Phil Harvey Steve Miller

George Calliga Man at Briefing (uncredited)

Kenner G. Kemp Officer at Briefing (uncredited)

Bing Russell Radio Operator (uncredited)

Bert Stevens Officer at Briefing (uncredited)

Ralph Brooks Man at Briefing (uncredited)

Tom Coleman Man at Briefing (uncredited)

Medium: Original DVD,

Location: On the Shelf - The Classic Sci-fi Ultimate Collection Vol. 2

Loaned: No

Aspect ratio: 2.39:1