rock excavation
31Ouvrage Le Lavoir — Part of Maginot Line, Alpine Line Southeast France …
32Ouvrage Pas du Roc — Part of Maginot Line, Alpine Line Southeast France …
33Ouvrage Les Rochilles — Part of Maginot Line, Alpine Line Southeast France …
34Ouvrage Col du Granon — Part of Maginot Line, Alpine Line Southeast France …
35Ouvrage Gondran — Part of Maginot Line, Alpine Line Southeast France …
36Ouvrage Saint Ours Haut — Part of Maginot Line, Alpine Line Meyronnes, Southeast France …
37Ouvrage Plate Lombard — Part of Maginot Line, Alpine Line Southeast France …
38Ouvrage Fontvive Nord-ouest — Part of Maginot Line, Alpine Line Southeast France Built by CORF Construction materials …
39Ouvrage Saint Ours Nord-est — Part of Maginot Line, Alpine Line Southeast France Built by CORF Construction materials …
40Ouvrage Restefond — Part of Maginot Line, Alpine Line Southeast France …
