Aiguille du Plan, Mountain peak in Chamonix, France

Aiguille du Plan is a granite peak reaching about 3,670 meters (12,000 feet) in the Chamonix Aiguilles range within the Mont Blanc massif. Its rock formations create sharp needles typical of this range, making it a challenging climb for experienced mountaineers.

James Eccles made the first ascent in 1871 with guides Alphonse and Michel-Clément Payot. On 10 August 1907 Josef Knubel and Geoffrey Winthrop Young completed the first traverse from the Aiguille du Midi. The Lagarde-Ségogne couloir on the north face was climbed on 24–25 July 1926 by Jacques Lagarde and Henry de Ségogne, and received its first winter ascent in 1966 by Yannick Seigneur and Michel Feuillarade.

The mountain's name comes from its needle-like form, visible from Chamonix in the centre of the Chamonix Aiguilles. Its climbing history is tied to the Payot guides of Chamonix, who accompanied James Eccles on the first ascent in 1871. The Lagarde-Ségogne couloir on the north face, climbed in 1926 with ten-point crampons and a traditional ice axe for cutting steps, was called one of the greatest feats of the interwar years and was not repeated until 1972.

Access to the climb starts from Plan de l'Aiguille station, which can be reached via the lower section of the Aiguille du Midi cable car from the valley. You will need rock climbing experience, proper equipment, and ideally a qualified guide to safely navigate the technical sections.

The north face forms a nearly vertical granite wall dropping about 600 meters, drawing skilled climbers from around the world. During summer months, this dramatic rock face becomes a destination for those pursuing advanced technical climbing.