[1] The post overlooks the valley of the Tinée at Isola on one side, and Beuil on the other.

[2] The advanced post at Isola, in the valley below Col de la Valette, was built by MOM (Main d’Œuvre Militaire), which built many of the lesser posts.

Built in 1931, Isola consisted of four blocks: a north entrance with one machine gun, an emergency exit, a machine gun casemate and an observation block with an AP cloche.

A small gallery system connected the blocks and provided shelter.

[2] The post is located in the bank of the Tinée just south of Isola at an altitude of 896 metres (2,940 ft)[3]