IIRC the man is trapped out in Africa and has to establish dominance over a tribe of baboons because mumble… mumble, well just 'cause.
Anyone remember this one?
It had lots of baboons and lots of rocks.
I searched IMDb for Plot contains baboon, and of the 8 hits, Sands of the Kalahari was the most favorable. I don’t think that’s it, though…
That’s it. Thanks!