The trapezoidal fort is arranged to face to the north, its entry to the south. The pink sandstone walls enclose a court which contains a central block which in turn contained magazines and barracks, as well as two twin 155mm
Mougin gun turrets, which constituted the fort's primary armament. It was originally furnished with a variety of guns on the ramparts, which were gradually reduced as the vulnerability of fixed gun emplacements in the open air became apparent. Six casemates were arranged for indirect fire, along with two satellite batteries. An optical signal post permitted communication with the
Fort du Salbert to the south. An 1890 modernization suppressed the casemates and replaced
caponiers with
counterscarps. Further modernizations saw the installation of electricity, three armored observation posts and detail improvements. More substantial changes, including the proposed installation of a 75mm gun turret were not carried out, but a shelter or
abri-caverne for 100 soldiers was excavated. Portions of the fort were reinforced with concrete against shellfire during the
First World War. ==History==