Grande Fourche, Mountain summit in Valais, Switzerland

Grande Fourche is a summit of the Mont Blanc massif on the Swiss-French border, rising to 3,611 or 3,619 m. It stands north of the aiguille d'Argentière, above the Glacier du Tour to the west and the Glacier de Saleina (Saleinaz) to the east, between the Valais canton and Haute-Savoie.

Grande Fourche lies on the Swiss-French border between the Glacier de Saleina in Valais and the Glacier du Tour in Haute-Savoie, north of the aiguille d'Argentière. Its summit is given as 3,611 or 3,619 m, the two figures reflecting differing survey values. The sources record no founding event or dated episode for the summit itself.

The name Grande Fourche means "great fork", referring to the summit's position where the Glacier du Tour and the Glacier de Saleinaz divide on either side of the Swiss-French border. The mountain rises just north of the aiguille d'Argentière, and its two flanks belong to Haute-Savoie and Valais respectively.

Reaching this summit requires advanced climbing and glacier travel skills from visitors. The approach demands careful preparation and familiarity with alpine conditions, as weather can change rapidly and glacial hazards are common.

Grande Fourche rises to 3,611 or 3,619 m just north of the Aiguille d'Argentière, on the line between Haute-Savoie and Valais. Its west side falls to the Glacier du Tour, its east side to the Glacier de Saleina (Saleinaz). The summit is therefore a border point as well as a high point of the ridge above the two glaciers.