About 20 years ago I went to Switzerland. I was blown away by the fact not only could one buy a ONE-way ticket to the top of the various mountains, that so many people were doing it. They would ski, hang-glide, or even walk down from the Matterhorn. At the top of the mountain they would all be assembling their gliders for the trip down, and on a breezy day (I guess they are ALL breezy days at that altitude) finding a flat space to set out the wings and people to hold them down must have been a challenge unto itself.

And people think riding bikes in traffic is crazy...