We hope that your experience, whatever your practice, is most successful, but in the field we do not always control everything... So our mission is to keep you informed!
Here is all the "Ongoing field information" you need to know before you leave.

Any questions?

For any questions, our travel advisors are available at the Tourist Office reception desks, by phone at 04 76 93 17 60 or by email at:

tourisme@paysvoironnais.com

Chartreuse sector

Outside the PDIPR network of the Pays Voironnais, access to the Grande Sure via the passage of the Not of Mercy is prohibited by municipal decreeIndeed, a geotechnical study carried out in 2010 had detected significant unstable rock masses with a very high risk of failureA recent rockfall in September 2025 served as a stark reminder of the danger of this route. We recommend using the Grapillons route described in the guidebook. The Grande Sure mountain pasture – OT Pays Voironnais.

report a problem

Are you encountering a problem on a trail (missing markers, a tree across the path, etc.)? Please let us know:

  • thanks to the app "Suricate", you can report the problem encountered without delay and geolocate it
  • by our contact formWe will need to be as precise as possible about the location to allow us to launch an intervention.
Fanny_Lebagousse

Let's not forget

Good reflexes

For a 100% successful outing 😉

Read the best practices

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