The snow arête
A narrow ridge down from the station with drops on both sides.
Cactus26 — CC BY-SA 3.0 · KlausFoehl — CC BY-SA 3.0 · KlausFoehl — CC BY-SA 3.0 · Cactus26 — CC BY-SA 3.0
**Competent off-piste skiing** — and this is widely misunderstood. You need no climbing experience and no exceptional fitness, but you must descend **ungroomed snow** confidently and hold your balance in heavy or broken snow for several hours at a stretch, and cope with a long day at altitude. A skier comfortable only on groomed red runs will find themselves exhausted and a hazard to the group. Guides ask about your level when you book — **be honest**; the route does not accommodate flattery.
Don't miss the valley altogether: the **Panoramic Mont-Blanc gondola** crosses above the Vallée Blanche itself in small cabins from the Aiguille du Midi to Pointe Helbronner on the Italian side, about half an hour flying directly over the glaciers and their crevasses — one of the finest rides in the Alps and needing no skill at all. It runs mainly in **summer** (closing in winter periods and for maintenance), so check it is operating. The other option is the **Mer de Glace** by the red train, to see a glacier close up without equipment.
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The most famous glacier descent in the world: a run beginning at the top of the **Aiguille du Midi** at 3,842 metres and dropping some twenty kilometres over glaciers to the Mer de Glace and on down to Chamonix, losing close to 2,700 metres of altitude. What makes it singular is that it is **not a prepared piste**: no markers, no grooming, no patrol, no safety net. You are skiing on a **living glacier** with crevasses both open and hidden under snow, whose positions shift from week to week — which is why it is **not skied without a qualified mountain guide**. That is not a recommendation but a practical condition of survival. The day begins with the part everyone remembers: the **narrow snow arête** leading down from the Aiguille du Midi station, a ridge with a rope on one side and a drop on both, walked in ski boots before you clip in at the bottom. The level required is not climbing experience but **good off-piste skiing**: the ability to descend ungroomed snow confidently for several hours. ⚠ The season runs from about late January to April depending on glacier conditions.
A narrow ridge down from the station with drops on both sides.
Hours over glaciers among the four-thousanders.
The non-skier's alternative — a gondola above the same valley.
Vallée Blanche, Mont Blanc massif, 74400 Chamonix