The Fort de l'Olive is a fortification in the vicinity of Briançon in the Dauphiné region of southeastern France. Initially called the Ouvrage du Bois des Gasquets, it was the third and final fort built near Briançon as part of the Séré de Rivières system of fortifications in the 1870s and 1880s. Located at an altitude of , the fort overlooked the valley of the Clarée above the village of Plampinet from a height of with a view of the Italian frontier. It specifically controlled the Col de l'Echelle, the Col des Thures and the Col des Acles. The rectangular walled fort extends over an area of about . The construction of Fort Chaberton on an even higher peak on the Italian side of the frontier rendered the Fort de l'Olive vulnerable to artillery from Chaberton, which was higher. The position