The Natives
Childhood fave.
I spent years looking for it under the wrong title. I thought it was Island At The Top of the World (I have that movie as well).
I used to try to play this story with toys as a kid, tho that didn't involve much more than dinosaurs being with the toy cars.
But in watching it recently, I observe the natives when Mills-Chevalier and co. are escaping down the rope.
Doesn't that chief just look like John Belushi in an SNL skit?