Here's what I found on the internet. Good luck and enjoy: Grand Canyon Rock Climbing. Although most of the Grand Canyon is unfit for rock climbing because of the soft chaucey rock, there are several established sport and trade climbing areas in the Park, as well as some bouldering. Most of the established routes are in the Area are around Grand Canyon Village.
You'll need a longer rope than usual...
Go figure!
It seems to me that you can only attend designated routes.
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