From the top of Grands Montets head west following the arrow on the map, to the top of the couloir; the line is shown in the photo to the left (top right corner).The entry (Picture 2) is fairly narrow at about 45 degrees steepness. This section is about 30m in length.
Picture 2
After this, the couloir widens to about 5-7m and about 40 degrees steepness for 4-500m before exiting onto the Glacier du Nant Blanc. Follow the usual Pas de Chevre exit to Chamonix, as shown by the arrows (Picture 3).
Picture 3
Difficulty; the top is easy, the couloir is easy to find. Given the length, the top of the couloir has a high exposure factor so that has to be factored in as it may affect your mind. Once past the narrow steep entry at the top, the couloir itself has plenty of space. It is not that difficult to ski. The exit on the Nant Blanc glacier needs care, as does finding the right exit down to the Mer de Glace.
Disclaimer: This blog is not responsible for any problems you may encounter from using this guide...it is indicative only. If you are unsure hire a UIAGM guide...they will probably be able to show you far better stuff anyway!
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