Moulinet Authion @Drone de RegardMoulinet Authion @Drone de Regard
©Moulinet Authion @Drone de Regard|Drone de Regard


and Redoute des Trois Communes
Authion, a remarkable fortification

The Authion mountain range peaks at an altitude of 2080m deep in Mercantour National Park. It was fortified between 1877 and 1940 to provide an essential link in the Alpine defensive barrier against neighbouring Italy.

Authion Mountain:

a fortification deep in Mercantour

After the county of Nice joined France in 1860, Authion became a strategic area monitoring the new Franco-Italian border. Relationships between France and Italy deteriorated in the late 19th century and the French military authorities decided the mountain range required fortifications. The Forca, Mille Fourches and Redoute des Trois Communes forts were built between 1883 and 1890. The system was designed by General Séré de Rivières, nicknamed the 19th cenutry Vauban, and joined by the Cabanes Vieilles camp to house Alpine hunters.

After Mussolini came to power, the War Minister André Maginot launched a programme to update the border’s fortifications (1930) e.g. in Plan Caval. The Authion fortifications stopped the Italian offensive in 1940. Following the D-Day Landings on the Mediterranean coast in August 1944, the German troops retreated and captured the Authion mountain range. Authion was in Allied hands on April 12th 1945. What a sight it must have been to see a tank driven by navy riflemen capturing a fort at an altitude of 2000m!