He sent pictures, of course, and they're amazing.
The two hikes he did with his best friend are both famous: the Narrows (which is through an extremely narrow canyon, walking through water about half the time) and Angel's Landing. Enjoy the photos!
I think this one was from their campsite. Maybe.
This was near the finishing point of Angel's Landing (again, not totally sure):
He's had more adventures in one summer that some people have in a lifetime. And his Oxford tuition is officially paid as of today, so he'll have another adventure starting in about a month.