The Ailefroide, soaring to an elevation of 3,954 meters, is a prominent mountain in the Massif des Écrins of the French Alps and ranks as the third highest peak in the Dauphiné Alps, following the Barre des Écrins and La Meije. It is situated at the south-western extremity of the Mont Pelvoux–Pic Sans Nom–Ailefroide ridge, presenting a striking feature in the alpine landscape.
This mountain is distinguished by its three principal summits, each with its unique history of ascent. The western summit, L’Ailefroide Occidentale, reaching 3,954 meters, was first conquered on July 7, 1870, by W. A. B. Coolidge, accompanied by guides Christian Almer and Ulrich Almer. The central summit, L’Ailefroide Centrale, standing at 3,928 meters, saw its initial ascent on August 8, 1889, by Auguste Reynier, Pierre Gaspard (father), Christophe Clot, and Joseph Turc. Lastly, the eastern summit, L’Ailefroide Orientale, at 3,848 meters, was first climbed by J. Nérot, Emile Pic, and Giraud-Lézin on August 25, 1880.