Pic de l’Aiguiller via the Rocher du Roux.

Access: from Briançon, head towards Villar-Saint-Pancrace to the south of the town, then head towards the mountain centre and turn left onto the track towards the hamlet of Les Ayes.
At the junction with the signposts, turn right towards ‘Les Ayes via the forest’ in the direction of the hamlet of Mélézin. The track on the left also leads to the hamlet but has numerous potholes.
At the next junction, turn left and follow the track to the Chalets des Ayes.
This track is easily passable by car and allows any vehicle to reach the hamlet.
After passing through the hamlet, take the track towards Lac de l’Orceyrette and park by the lake.
Another parking option: if you have a vehicle with higher ground clearance, continue along the track, climbing above the lake, then at the junction take the track on the left. After a 2.5 km climb, you’ll reach the Chalets de l’Alp. Park on the left-hand side of the track at the hairpin bend just before the sheepfold.

(S/E) From Lac de l’Orceyrette, follow the road to the Chalets de l’Alp.
Walk up the lane towards the Chalets de l’Alp until you reach the first chalet on the right.

(1) Leave the lane and head due east, passing to the left of the chalet.
Continue in the same direction until you reach the last chalet. (This one has a distinctive larch roof.)
Climb generally north-eastwards to the Rocher du Roux, which you will need to go round to the right. Follow a small cairn-marked path (not shown on the IGN map) which leads to the foot of the rock and then runs along its right-hand side.

(2) Continue in the same direction to the base of the large sloping ridge descending from the Pic de l’Aiguiller.
Climb this slope as best you can, gradually moving closer to its left-hand side without getting too near it. A distance of 5 to 6 metres is ideal. Its edge is slightly winding, which helps to keep you out of the line of exposure.
You’ll emerge onto a narrow ridge, which you follow gently southwards for 80 metres to the summit.

(3) Return in the opposite direction via the same route to the car park (S/E).

I’ve made a video, complete with the names of the peaks, which shows the route and the atmosphere of the walk.

It’s a hike that’s partly off-trail, involving a climb up a steep slope, which rounds off the panorama with a magnificent view of the Écrins.
Although it can be done with a map and compass, navigating using GPS or the Visorando app will be easier.
Suitable for experienced hikers accustomed to this type of terrain and with a head for heights.
I would rate the difficulty as upper medium.
However, access to the Rocher du Roux presents no difficulty.
From the Chalets de l’Alp, allow 3 hours to complete this 5 km route.

Note: I do not recommend continuing along the ridge towards the Pic des Chalanches. This section of the ridge becomes very narrow and highly exposed on loose rock.
On the way down, don’t forget to visit the Rocher du Roux if you didn’t see it on the way up. It’s an
ideal spot for a picnic and to take in the views. This rock is large enough to accommodate a group of walkers.