Accessed from the 'top tickets' lift at Grand Montets, you skit nervously across the glacier before dropping into one of the longest and most satisfying couloirs in the valley. It's both dangerous and very reliant on snow conditions, so it's best to go with a guide. From the bottom it's a short hike up to the Montenvers train, which takes you back down to the centre of Chamonix, or - snow allowing - you can take the trail through the woods.
Les Grands Montets, Chamonix
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