![]() | You can help expand this article with text translated from the corresponding article in German. (July 2012) Click [show] for important translation instructions.
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The six great north faces of the Alps are a group of vertical faces in the Swiss, French, and Italian Alps known in mountaineering for their difficulty, danger, and great height. The "Trilogy" is the three hardest of these north faces, being the Eiger, the Grandes Jorasses, and the Matterhorn.