Teenage Caveman (also known as Out of the Darkness in the United Kingdom) is a 1958 American independent black-and-white science fiction adventure film produced and directed by Roger Corman, and starring Robert Vaughn and Darah Marshall.

A tribe of primitive humans live in a barren, rocky wasteland and struggle for survival, despite a lush, plant-filled land on the other side of a nearby river.

They find another strange thing in the old man's possession; they are puzzled by this flat, thick object that opens and contains mysterious markings and vivid black, white and gray images that show an even stranger human world unknown to them.

He was actually a survivor of a long-ago nuclear holocaust, forced to live for decades inside his now-ragged, discolored and bulky radiation suit (which is implied to have once been covered with deadly radioactive fallout).

The old man has wandered the land for decades, while the primitive remnants of a devastated human race have slowly increased their numbers; his frightening outer appearance caused them to fear and shun him.

While a number of scripts were considered to meet American International's directive to produce a historic picture, Corman used Bob Campbell's idea of setting the movie in the future.

[6] The film was released on DVD by Lionsgate Home Entertainment on April 18, 2006, as part of a two-disc set with The Saga of the Viking Women and Their Voyage to the Waters of the Great Sea Serpent on the first disc.