From the ONF car park in Aumont, take the path that starts at the barrier at the back of the car park and continue straight ahead (north) along plot 306, ignoring the paths on either side. At the crossroads, turn right (at the corner of plot 274) and go uphill.
(1) At the top, at the Carrefour d'Aumont, take the second path on the left (273).
(2) At the crossroads, turn right (272). After the first stone marker, continue straight ahead and, at the next crossroads, turn left.
(3) At the crossroads, turn right, staying on the high ground. Continue straight ahead along the ledge.
(4) At the crossroads, continue along Route Tournante, which veers slightly to the left. At the next junction, turn right onto theGR®12B(white and red markings).
(5) At the next crossroads, continue straight ahead (268). At Carrefour des Fossés, turn right (without going downhill).
(6) At the left-hand bend, you will see two boundary markers on the right-hand side. At the crossroads after the bend, continue straight ahead (south-west) on the stony track.
(7) At the next crossroads, continue on the track to the right (west). Go straight ahead on the track (in the middle of the straight line, there is a marker in the undergrowth on the right, under a large beech tree).
(1) At the crossroads at the end of the straight line, continue straight ahead downhill. At the next crossroads, turn left to return to the Aumont-en-Halatte car park (S/E).