No special access issues
Park on the big parking of Roche aux sabots, from here walk with Chemin de la saussaye towards pivot but continue until you get to a tarmac road. Walk left for about 100 meters and you'll see a path in on the left. Also the boulder at that path has a clear orange 29 painted on it. You can also walk trough Roche aux oiseaux and combine these for one day. They are neighboring areas with only 50m between them.