I kept wondering, "How did they get these shots?"
You may be interested in listening to this interview with the filmmakers Jimmy Chin and Chai Vasarhelyi on how they made the movie.
https://www.richroll.com/podcast/jimmy-chin-chai-vasarhelyi-407/
It's always the guy who never gets any credit. It was the cameraman climbing next to him using only one hand and the camera in the other........
Just kidding....I suspect they were using camera drones........