Between 1883 and 1889 is equipped with various types of artillery, while during World War I it was partially disarmed and turned into a prison camp for the Austrians in the area used in the maintenance of military roads and the Frejus tunnel.
In the Thirties two modern centres of resistance were added in the cavern of Vallo Alpino. In September 1943 the Fort was occupied by a German garrison which, fearing actions by partisans, mined the entire surrounding area. It was abandoned by the last Germans on the morning of 27 April 1945. When peace arrived, the fort was decommissioned and abandoned.
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Admissions
Accompanying people with disabilities, Over 65 years old, Aged 6-12, journalists with badges, groups of minimum 25 pax, tourist guides Province of Torino, military, Cai members, Fai members, Tci members, university students up to 26 years
People with disabilities, Children under 6, Abbonamento Musei holders, Torino + Piemonte Card owners (Saturdays and Sundays only)
School groups
Holders Torino+Piemonte Card