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Sonce (rivière) walks
The Fosse Arthour tour
Visorando Member
5.26 mi
+433 ft
-410 ft
2h 50
Easy
Departure from Saint-Georges-de-Rouelley (Manche)
This easy hike allows you to discover the Fosse Arthour. It is a geological fault called a cluse, which gives the landscape an exceptional appeal.
This cluse forms a narrow, 70-metre-deep gorge carved into a rocky ridge and strewn with large boulders on its sides. The area is ideal for walking and climbing.
La Fosse Arthour in all its splendour
9.61 mi
+587 ft
-600 ft
4h 55
Moderate
Departure from Rouellé (Orne)
Passing through a marshland to discover this natural wonder – a gorge over 70 metres high, carved out by a river which, at this point, is more like a torrent – come and explore the Sonce and walk a short section ofthe GR® trail that links France’s two most spectacular sites: Notre-Dame Cathedral in Paris and Mont-Saint-Michel Abbey.