Stuntman-of-the-day award goes to German photog, Jens Staudt. While climbing a steep pitch, trying to get set up for a shot, the boulder that he was holding on to, let go. Both him and the boulder dropped over 25ft. Lucky for him, there just happened to be be a massive mound of sand at his landing. The only injury he got was a sand-blast to his face and camera gear.
Pro Canon gear is all weather sealed with gaskets and orings but they can still get contaminated when removing lenses. Which in a case like this is quite likely. . . .