Grand Bargy, Alpine summit in Haute-Savoie, France

Grand Bargy is a 2,301-metre summit in the Bargy range, Haute-Savoie, formed of an urgonian limestone anticline. It appears as an elongated ridge, cut by erosion at its south-western end into the secondary top of La Tour. The photograph shows layered grey rock bands on the summit ridge, a steep central wall with dark vertical striations, and snow-covered shoulders above patches of coniferous forest.

Grand Bargy is an anticline of Urgonian limestone, a rock type laid down in the Cretaceous and later lifted by Alpine folding. Erosion at its southwestern end carved the secondary summit known as the Tour, leaving the elongated ridge seen today. The layered grey bands on the summit wall are the tilted limestone strata.

The summit is climbed from the Col d'Encrenaz, reached either from Lac Bénit in the northwest or from the heights above Le Reposoir in the southeast. The mountain overlooks the Morsulaz winter sports resort, on the territory of Mont-Saxonnex. The ridge toward the Pointe Dzérat carries several unnamed small tops.

The main routes start from Col d'Encrenaz or Le Reposoir village, following orange-marked trails to the summit. Weather changes quickly at this elevation, so visitors should bring layers and check conditions before heading out.

The summit is an anticline of Urgonian limestone, an elongated ridge whose southwestern end was cut by erosion into a secondary top, the Tour. The summit itself is reached by a trail from the Col d'Encrenaz, itself accessible from Lac Bénit to the northwest or from above Le Reposoir to the southeast.