Guess the old movie?

Pepper was quite intrigued by this, 2001 A Space Odyssey. The primitive men were talking her language!
I hadn’t watched it for a long time and it is interesting to see again. It is paced so slowly and there’s almost no dialogue. The ending is really spooky and I think it leaves me with a profound sense of the insignificance of mankind in the overall picture of the universe.
Profound!!