No special access issues
Park on either of the big parkings shown on map. Follow the recorded track, from 95.2 parking especially, it's not a straight forward approach. From the parking of Guichot, you just take chemin de la mee, turn slightly left about 500m at the crossing to chemin de rocher blanc and continue with this path. Around 400m after diplodocus you should be able to see on the left side of the road the hill of Rocher fin.