One Million B.C. is a 1940 American fantasy film produced by Hal Roach Studios and released by United Artists. It is also known by the titles Cave Man, Man and His Mate, and Tumak. The film stars Victor Mature as protagonist Tumak, a young cave man who strives to unite the uncivilized Rock Tribe and the peaceful Shell Tribe, Carole Landis as Loana, daughter of the Shell Tribe chief and Tumak's love interest, and Lon Chaney, Jr. as Tumak's stern father and leader of the Rock Tribe.

The future is bleak for a troubled boy from a broken home in the slums. He runs away when his step father breaks his violin, ending up sleeping in the basement of a music school for poor children.

A group of people traveling on a stagecoach find their journey complicated by the threat of Geronimo, and learn something about each other in the process.