Access via the forest road from the D941 or D20. Parking around the Grand Rond.
No signposts
(S/E) From the Grand Rond, head west-southwest and follow the Ligne des Trois Pierres straight ahead until you reach the Rond des Hussards.
Yellow signposts
(1) Take the lane immediately on the left at an acute angle. After about 100 metres, leave it and follow a bridle path on the right at the edge of the national forest and private woods. Stay close to the embankment and the ditch at the edge of the forest, do not cross them.
(2) Further on, the path turns east and returns to the national forest.
(3) You will come out onto a paved forest road; follow it to the left. Immediately cross Route de la Rachée and continue on the paved road. Pass in front of the Chêne d'Hérissé, a remarkable tree that towers above the others, and continue for about 100 metres.
(4) Then turn right onto the layon between plots 143 and 144.
(5) At the end, turn left and follow a stream (not shown on the map). Ignore a path on the left (plots no. 143 and no. 142) and reach the Ligne du Haut Cornet.
(6) Turn left and quickly join the Grand Rond (S/E).