The Clan of the Cave Bear (1986)

In prehistoric times a young Cro-Magnon girl is separated from her mother during an earthquake. She is found and cared for by a tribe of less intelligent Neanderthals.

Daryl Hannah plays the prehistoric human taken in by a gang of Neanderthals who then makes her own contribution to the evolution of the species. Dialog is a series of grunts translated via subtitles.

Although Hannah provides very attractive eye-candy, watching Raquel Welch dodging dinosaurs in One Million Years BC is a lot more entertaining.