This itinerary goes along a stretch of the so-called Road of the Cannons, used in the past by the armies to carry the heavy artillery up to the ridge.
Along a long road climbing to Col Blegier, at 2,050m, a wooden trail marker on the left marks the beginning of the trail. You will enter a larch and Stone pine wood and, after 800 m you will find the boundary stone marking the beginning of trail no. 7 on the left. At 2,280m, after about 2.5 km, the trail definitively comes out of the wood and you will enjoy a great view over the alpine grassland. After meeting the GTA, the Road of the Cannons continues for 1.8 km up to the ridge, reaching the SP road of Assietta (2,495m).