Ouvrage Sapey, Military fortification in Modane, France.
The Sapey fortress stands at 1,740 meters altitude, featuring five combat blocks and an entrance block spread across the mountain summit.
Built between 1885 and 1891 as part of the Séré de Rivières system, the fort underwent modernization from 1930 to 1936 during the Maginot Line expansion.
The structure represents French military engineering evolution, transforming from a stone fortification into a concrete artillery position over several decades.
The fort requires a 550-meter elevation gain hike on unmarked paths, with vehicle access restricted before the entrance point.
An aerial tramway connected the fortress to Fort du Replaton, constructed in 1908 to facilitate personnel and supply transportation.
Location: Modane
Location: Saint-André
Inception: 1931
Elevation above the sea: 1,737 m
GPS coordinates: 45.20307,6.64967
Latest update: June 23, 2025 09:51
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