Petite Envers (From the Aiguille du Midi)

I actually did this same route three times, over a couple of weeks, with Bob. All in slightly different conditions; no fresh snow, a bit of fresh snow, at -52C below on the Aiguille du Midi arrete (with wind-chill), and once when my binding broke halfway down, though luckily I could still ride it out. This map is an old one, so the glacier formation has changed a lot, but the route we took is roughly marked in purple. What you can see here represents about 4km of skiing. After the picture, there is about another 5k to the end of the glacier (very gentle), then another 4k along a track back to Chamonix itself - so a minimum of 13k in one run...