Blue John has been a favorite of canyon explorers for many years, but it became widely known after a large boulder fell and trapped climber Aron Ralston’s arm. (He survived, and his story was told on film in 127 Hours, starring James Franco). Where Ralston got caught, and the route to get there, is not particularly scenic; that said, there are a number of other beautiful spots to see in the canyon, many of which are linked via the East/Main Fork Loop. There are a few rappels and technical gear is required, but you can hire a guide if you want to explore with an expert by your side.
