Well, I guess it had to happen. I have to confess that I stood under the approach path for an AF 340 there. It's something you feel that you have to do there. Only did it once, am aware of the danger of course [exPPL], but there is no way that I would stand behind the take-off. Sand blowing, stones, very dangerous and very difficult to keep on your feet. Lovely place, but undershoot areas are for aircraft, not people and possibly getting blown into a concrete block can spoil your entire day.