Église du Saint-Nom de Marie (Roya) walks

This trail allows you to discover a little-visited valley in the Mercantour: you can see marmots and chamois here. The landscape is very varied, alternating between coniferous forests, meadows and ridges which, in good weather, offer views of the peaks of the Mercantour, Queyras and Écrins.

The military structure built at Col de Crous provided passage between the Tuébi and Péone valley to the south and the Roya (Tinée) valley to the north.The small structure was built between 1932 and 1939 by military labour (MOM), more specifically by a detachment from the27th Algerian Rifle Regiment under the supervision of personnel from the7th Engineer Regiment.The support structures were built underground, dug several metres into the rock, while the combat structures, scattered across the surface in the form of blocks, were protected by thick steel armour plating and layers of reinforced concrete. The underground facilities housed barracks for the crew.High-altitude climatic conditions, a lack of resources and the non-priority nature of the project delayed progress. In June 1940, fighting against the Italians cancelled all work planned for the summer season.