Ouvrage Pas du Roc

Ouvrage Pas du Roc is a work (gros ouvrage) of the Maginot Line's Alpine extension, the Alpine Line. The ouvrage consists of one entry blocks, one infantry block, two artillery blocks and one observation block 6 kilometres (3.7 mi) south of Modane and 1.6 kilometres (0.99 mi) east of Ouvrage Le Lavoir in the vicinity of the Col de Fréjus. The position was incomplete at the outbreak of war in 1940.