1
From the center of the village of "Saint-Martin-en-Vercors" (alt. 753m) follow the yellow and red GRP markings, carefully taking the D103 towards the south (cars arrive quickly without much visibility).
2
At the war memorial, leave the D103 and take the small road on the right. Follow it to the place called "Les Menuisiers" (alt. 755m).
3
Continue along the tarmac and pass the cemetery. The road becomes a track and runs above the houses to reach the hamlet of "Revoux" (alt. 744m). Cross the road and continue straight ahead along the path to the junction at L' "Ale" (alt. 734m).
4
Turn left and head down a small descent that soon joins the D103. Follow it to the right for 200m (be careful!) to reach a small bridge.
5
Turn left, cross the bridge over the Buyèche and climb along the edge of the meadow to "Coinchettes" (alt. 762m). Here, it is possible to shorten the walk by turning left. To continue the route, turn right and begin a steep descent to quickly reach the hamlet of "Tourtre" (alt. 711m). This hamlet, since the XNUMXth century, has been processing iron ore to make metal. The hydraulic power provided by the waters of the Adouin was used by many industries such as spinning mills and sawmills.
6
Climb up to the village center, now following the yellow and green markings. Reach the highest house at L'Apparition (alt. 750m). Continue along the tarmac to reach the "Source de l'Adouin" (alt. 810m).
7
After the springs, the small road passes between two houses and then becomes a track. Continue along this path, which gently leads back to Saint-Martin-en-Vercors.
8
Find a small road at "Coinchettes" (alt. 762m), follow it to the right until you reach the houses of L' "Arenier" (alt. 765m). Go down to the left towards the village.
9
Go to the “Junchards” (alt. 727m) before going back up to the village square of Saint-Martin-en-Vercors.
