Ouvrage Croupe du Reservoir

Ouvrage Croupe du Réservoir is a lesser work (petit ouvrage) of the Maginot Line's Alpine extension, the Alpine Line. Located on the heights of Roquebrune at an elevation of 139 meters, the ouvrage consists of one entry block and one observation block facing Italy and covering the Grande Corniche road. The fortification was manned by 60 troops of the 58th Demi-Brigade Alpin de Forteresse (DBAF) under the command of sous-lieutenant Roman.

Description
Croupe-du-Réservoir is located in a hill above Ouvrage Cap Martin, positioned to prevent infiltration along the corniche road. Two blocks are connected by a gallery with short side passages.
 * Block 1 (entry): One machine gun port and one grenade launcher port.
 * Block 2 (infantry): One machine gun cloche. There were no other ports or firing positions.

The ouvrage is privately occupied and has been kept in an excellent state of preservation.