![](/images/other/stat-length.png)
![Trail On foot Saint-Jacques-des-Blats - Le Puy Griou à St Jacques - Photo](https://media.geolcdn.com/t/1900/400/ext.pjpeg?maxdim=2&url=https%3A%2F%2Fstatic1.geolcdn.com%2Fsiteimages%2Fupload%2Ffiles%2F1545311037marcheuse_200dpi.jpg)
Le Puy Griou à St Jacques
chanac les mines
User
![Length](/images/other/stat-length.png)
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![Uphill gradient](https://static1.geolcdn.com/siteimages/upload/files/1508320355ic_sort_den_pos_24dp.png)
![Km-Effort](/images/other/stat-length.png)
![Min alt](https://static1.geolcdn.com/siteimages/upload/files/1508320355ic_sort_altitude_min_24dp.png)
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![On foot](https://static1.geolcdn.com/sitytour/trail-icons/100.png)
5h00
Difficulty : Difficult
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About
Trail On foot of 15.1 km to be discovered at Auvergne-Rhône-Alpes, Cantal, Saint-Jacques-des-Blats. This trail is proposed by chanac les mines.
Description
Le Puy Griou est un majestueux dôme de phonolite, la "pierre qui chante". A son sommet, on retrouve la structure originelle de prismes réguliers. L'alternance de gel et de dégel de la dernière glaciation explique les éboulis qui habillent ses flancs. Observez ses 2 frères le Griounou (1514m) et l'Usclade (1498m), l'ensemble est datée d'environ 7 millions d'années.
Positioning
Comments
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