A walk of discovery from Vercors in a loop between the cliffs, forest and meadow. Small height change.
Calculated time is computed with the distance, the height difference, and an average speed of 2.2 mph. For an intermediate walker, this time includes small breaks.
Park at Porte d'Herbouilly (D221), altitude 1,280 metres.
(D/A) At the direction sign for Favier, head towards the north-west, following the Yellow-Red waymarking to begin with. After a short climb and then a descent on a wide path, you will reach Favier at 1,211m.
Ignore the path on the left and continue to the right for a short distance up to the point marked: "le Chemin de la Pia" 1,200m.
(1) Take this path to the right in the direction of 'Pas de Saint-Martin', Yellow-Green waymarking.
The path climbs into the forest and quickly reaches some rocks which are easy to climb, although you need to be careful in wet weather. On the edge, you have a beautiful viewpoint over the "Vierge du Vercors".
On arriving at the foot of the cliffs, follow the path to the north - this is the 'Chemin de la Pia'.
Cross through a paragliding launch area, ignore the path on the right and continue ahead, still in a northerly direction, on (what we call in Chartreuse) a "sangle" ('strap'): a ledge.
Pass in front of the Saint-Martin cabin (a rough shelter on the ledge) and continue on until you reach the Pas de Saint-Martin.
Beautiful views to the north over the "Vierge" and to the west over Saint-Martin en Vercors and its meadow, and to the south over Grand-Veymont.
On the right-hand side: the cliffs, on the left-hand side: the void, but the path is wide enough, all the same. You need to be careful if you have children with you, but it doesn't present any difficulties because it is flat.
Enter into the forest. The path is still waymarked Yellow-Green, heading to the east.
(2) At the crossroads, it veers to the left and loops to the north-west. It quickly resumes its west-east axis at the place called "La parcelle 5", at an altitude of 1,350 metres. This is the highest point of the hike.
(3) Continue towards the east through the forest, ignoring a path on the left, until you arrive at the road climbing up to Chalimont Pass at the place called "Les Tenailles" at an altitude of 1,310 metres.
Cross the road and go back downhill opposite through a small section of the forest until you reach Herbouilly Meadow.
(4) At the crossroads on the Grande Traversée du Vercors path, turn right, heading due south and join the road to "Pot du Loup", at 1,300 metres altitude.
Turn left onto the road for about 500m until you reach a crossroads with a wide path.
(5) Follow the path to the left and in about 20 minutes you will reach Roybon.
(6) Turn right and follow the return path to the north-west, going in front of the 'Gîte d'étape' (large gite) called 'Auberge de Roybon'. After a short descent you will reach Porte d'Herbouilly (D/A).
D/A : km 0 - alt. km 0
1 : km 0.79 - alt. km 0.79 - Chemin de la Pia
2 : km 1.93 - alt. km 1.93 - Crossroads
3 : km 2.22 - alt. km 2.22 - "La parcelle 5"
4 : km 3.5 - alt. km 3.5 - Plaine d'Herbouilly
5 : km 5.24 - alt. km 5.24 - Towards the Roybon forest path
6 : km 5.98 - alt. km 5.98 - Roybon
D/A : km 6.55 - alt. km 6.55
Good walking shoes.
No water points on the route.
We advise taking IGN maps with you on this walk. Click here to buy : 3236OTR.
Hikideas and this author cannot be held responsible in the case of accidents or problems occuring on this walk.
The Pas de Saint-Martin is typical section of the Vercors: over cliffs to reach a forested plateau and the Herbouilly meadow, its karstic terrain with caves, lapies and sinkholes: the famous "Pots (tubs) du Vercours".
Plaine d'Herbouilly: by walking a bit further to the north of the plain (5 minutes), you will find a ruined farm, the cradle of the Resistance.
At Porte d'Herbouilly and the Auberge de Roybon you will find fun spaces for children, a "filambule" (a fun shop in France) of 1,000 m2, a route of discovery based around the theme of knights, dragons and fairies.
This is a hike that starts with a ferry crossing.
The objective is to take the two elegant bridges.
The first bridge crosses the Drac.
The second bridge crosses the Ebron.
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A hike that visits one of the 7 Wonders of Dauphiné.
A vertiginous and rarely-taken loop, where you come across ibexes and chamois at every hairpin bend. Make sure you always have a helmet (ibexes love to send stones flying), as well as crampons and an ice axe until late in the season, as névés remain in place fairly long within the steep Serre-Brion couloir. It is best to start your hike early in the morning so that snow is still hard when reaching this couloir.
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