The Grandes Jorasses (French pronunciation: [ɡʁɑ̃d ʒɔʁas]; 4,208 m; 13,806 ft) is a mountain in the Mont Blanc massif, on the boundary between Haute-Savoie in France and Aosta Valley in Italy.

The second-highest peak on the mountain (Pointe Whymper, 4,184 m; 13,727 ft) was first climbed by Edward Whymper, Christian Almer, Michel Croz and Franz Biner on 24 June 1865, using what has become the normal route of ascent and the one followed by Walker's party in 1868.

In her solo ascents of the six most difficult north faces of the Alps, Alison Hargreaves chose this route in preference to the Walker Spur.

[1] On the Italian side of the mountain, the south face can be accessed from the Boccalatte cabin, above the hamlet of Planpincieux in the Italian Val Ferret, part of the Courmayeur municipality.

From the Col des Hirondelles, the summit ridge connects Pt.