We went to the rock climbing part of St Croix River NE of Minneapolis Minnesota When we arrived there was an ambulance.
We walked on a very rocky rugged trail over jagged refrigerator size nasty boulders to get to the cliff and then learned that a girl climber (25ish?) fell and broke her hip, ribs and shoulder while walking on the very trail that we just used. Yes the trail was rough, but not that bad (unless you fall).
This is the trail to one of the many climbing areas.
It's a very popular area for rock climbing (we watched), nothing else like it for hundreds of miles, so they come here.