Start from the car park at Saint-Même d’en Haut (3 km from Saint-Pierre).
(S/E) Follow the signposted path which enters the cirque and follows the stream (waterfalls) up to the Pas du Ruat (source of the Guiers Vif and a cave 5 minutes away).
(1) Turn back and cross the cliff via the Pas de la Mort (a tricky section).
(2) Reach the plateau via a circular route to the south, then take a path northwards and cross the Alpette to reach the Alpettaz and theGR®®9.
(3) Head north, passing by the Habert de la Dame before reaching the Pré de Pratcel meadow.
(4) Turn right and head up the Vallon de Pratcel.
(5) At the crossroads, continue left along theGR®® to the Chalets de l’Habert de Saint-Vincent via the Pas de l’Échelle.
(6) Leave theGR®® and head up to the right to the Croix de l’Alpe (1,821 m).
(7) Continue to the right to return via the Col de l’Alpe.
(8) From the pass, follow the Vallon de Pratcel to the right to rejoin theGR®®9.
(5) Continue straight ahead to the Pré de Pratcel (1,450 m).
(4) Leave theGR®® and head straight down. A steep path which joins theGR®® du Tour de la Chartreuse (ruins) further down.
(9) Turn right and walk for about 20 minutes.
(10) At the crossroads, turn left onto a path that leads back down to the road and the car park where you started (S/E).
