Eegah (1962) (repost)

Teenagers stumble across a prehistoric caveman, who goes on a rampage.

Director:

 Arch Hall Sr. (as Nicholas Merriwether)

Writers:

 Bob Wehling (screenplay), Arch Hall Sr. (original story)

Stars:

 Arch Hall Jr., Marilyn Manning, Richard Kiel - via IMDB 

https://archive.org/details/Eegah