He broke his femur! That is a dent from his foot. The femur is the strongest bone in the body. He hit frikin hard! That landing was like concrete, it takes a lot to dent packed Colorado dirt.
Agree'd,look at all the ground around the crater, it's all hard pack,really hard pack,like concrete hardpack.Imagine the force,Alex Pro's knee hit that,it's a very unusual pic for JB to send out,but it's a good reminder of what can happen,to "ANY" of us pro or non-pro.Keep it safe,always wear your lid,and padding,and be careful out there.Keep it pinned,not binned. Gary.