Ouvrage Plan Caval, Military fortification in Breil-sur-Roya, France
The defensive structure features three combat blocks connected by a narrow underground gallery at an altitude of 1,870 meters in the Alps.
Built as part of the Alpine Line extension of the Maginot Line in the late 1930s, this fortification faced Italy during World War II.
The fortification represents French military engineering expertise through its integration into the mountainous landscape of the Maritime Alps defensive sector.
The structure housed 287 soldiers under Captain Philipp's command in 1940, controlling access to the Maglia and Cayros valleys.
Three additional blocks were designed to transform it into a larger fortification, but construction remained incomplete due to the outbreak of war.
GPS coordinates: 43.99726,7.44300
Latest update: June 23, 2025 11:10
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