Les Périades, Mountain summit in Haute-Savoie, France

Les Périades is a sharp mountain ridge in the Mont Blanc massif that extends about 1500 meters and connects several peaks. The highest points reach above 3500 meters and form a challenging route for experienced mountaineers.

The name Les Périades belonged to the Aiguille du Tacul until the late 19th century. Pointe des Périades was first climbed on 27 July 1883 by Paul Perret with François and Alfred Simond. The wooden bivouac built in 1925 by Paul Chevalier and Maurice Sauvage was inaugurated on 28 August 1928; after partial collapse in July 2019 it was dismantled for the Chamonix alpine museum, and a 700 kg two-place hut was helicoptered in on 20 July 2020.

The mountain region carries names reflecting French mountaineering history, including Pointe Auguste Cupelin at 3549 meters and Pointe des Périades at 3503 meters.

The Périades bivouac sits at 3,441 m between Pointe Sisyphe and Pointe de la Fenêtre, at the outlet of the Brèche Puiseux. The original 1925 wooden hut, 3 m by 2 m and 1.5 m high, was replaced in July 2020 by a two-place wooden shelter of 700 kg, heliported onto a platform beside the old site. The earlier structure, damaged by permafrost melt in 2019, was dismantled for the Chamonix alpine museum.

The ridge's name once belonged to another mountain: until the late 19th century, Les Périades was the name given to the Aiguille du Tacul, clearly visible from Montenvers. Before 1914, Geoffrey Winthrop Young and his guide Joseph Knubel climbed three unidentified summits of the ridge.