It's silly and funny and entertaining, with implied rather than shown violence. A caveman is discovered in Iceland and a scientist has him shipped back to America in a block of ice. Naturally, there is an accident and the ice block falls off the ship and is last seen off the coast of Cape Henry, Virginia. The caveman is next seen running amok in West Virginia. How he got there is never explained.
I was especially amused at how the potbellied caveman who emerged from a glacier in Iceland wears a cheetah fur instead of... oh, I don't know... seal, maybe? And he knows how what a doorknob is and how to work it when he enters a science fiction convention hotel.
Conrad Brooks arrives in town on the Amtrak to work with the military and the local gendarmes. Clad in workmanlike Western clothes, his goal is to capture the Beast. Can he succeed? See the movie!