Ouvrage Col du Caire Gros is a lesser work (petit ouvrage) of the Maginot Line's Alpine extension, the Alpine Line.

The ouvrage consists of two entry blocks at an altitude of 2,048 metres (6,719 ft).

Additional blocks were planned but not built.

[1] The ouvrage blocks access to the Col du Caire Gros from the north.

This military base or fortification article is a stub.