Park your vehicles on one of the many grassy areas near the Col de l’Échelle.
(S/E) Follow the path (GR®5B) northwards, running alongside the D1 road for about 2,500m to the Mauvais Pas bunker.
(1) Leave theGR®, cross the road and take the path that runs alongside the ravine (the path is marked by a sign in poor condition indicating the Aiguille Rouge in Italian: "Guglia Rossa - sentero difficile").
Follow this path, which climbs steeply northwards before veering north-west, then west. At times, the going is a little difficult due to the path being damaged by erosion caused by inconsiderate walkers who have cut across it. Stick closely to the main path.
(2) The route passes beneath a small red needle. From this point, the slope is less steep and the path becomes easier.
Pass in front of some old military shelters and continue to follow the path which climbs up to a small pass and rejoins the ‘normal’ route up to the Aiguille Rouge.
(3) Follow this well-marked path to the right and reach the summit (altitude: 2545m).
(4) Descend via the same route to the small pass.
(3) Head south along the well-marked path, which descends rapidly and joins theGR®57.
(5) Continue straight on along theGR®57for 2,500m until you reach a fork.
(6) Leave theGR®57, which descends towards Plampinet, and follow theGR®5Bto the left, which soon joins the Col de l'Echelle (S/E).