je ne peu pas créer d itinéraire jusqu’ au lac cap long
Hallo @Philippe_Andre,
If you explain to us in a little more detail what isn’t working - or share your route(part) with us - we’ll be able to help you better. This is how you can share your route.
I assume you mean a route like this one:
You can not reach Lac de Cap-de-Long due to forbidden access of D929, reason: Danger of falling rocks