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The hike starts on Avenue du Bouteiller in the town of Chantilly (Oise)
It is a dead-end street that ends near the Canal Saint-Jean. There are always places available.
No signposts
(S/E) Head towards the canal and turn left to follow it.
At the end, turn right.
(1) Further on, turn left into Parc Watermael-Boitsfort and cross it.
At the exit, take Rue Guilleminot in front of you and follow it to the viaduct.
Continue straight on Rue du Viaduc until you reach Hameau La Chaussée, where you will arrive at the corner of Auberge de la Renardière.
(2) Cross the crossroads and take Sente des Carrières à la Chaussée opposite, which ends at Rue de Creil, where you turn left.
(3) A little further on, at the bend, go straight ahead into the cul-de-sac (Sente des Carrières à la Chaussée) which leads to Impasse des Carrières where the troglodytic village is located.
Go to the end of the cul-de-sac and retrace your steps.
(5) Roughly in the centre of the village, on the right, a path leads down to Rue des Carrières. Please note: if you are prone to vertigo, do not take this path. Instead, retrace your steps to the fork and turn right into Rue des Carrières.
Continue and, at the junction with Rue de Creil (D162), turn right. At the left-hand bend in the D162, turn right into Rue de Chaumont and continue along Avenue de Toutevoie to No. 18.
(6) Cross the small stream using the footbridge on your left and enter the park.
After about 100 metres, turn right onto the path that leads to a beautiful track running along the edge of the woods.
(7) Take the path opposite that runs along the shore of the Étang de Toutevoie and walk around it (about 2 km) to return.
(7) Then take the track westwards and, at the crossroads 200 metres further on, turn right. You will arrive at the banks of the Oise at the corner of the Hostellerie du Pavillon Saint-Hubert.
(8) Continue along Avenue de Toutevoie, which runs alongside the Oise at the start, then turns right. At No. 15, turn left onto Chemin de Trossy and follow it.
(9) An information board details a short walk to Camp de César.
About 2.5 km further on, you will arrive at the junction with the D44, near a caravan park.
(10) Cross the D44 and continue along Route de Saint-Leu until you reach the next crossroads, which has traffic lights.
GR® trail markers (red and white)
(11) Cross the road and take Rue Guy Cauville, which climbs towards the hamlet of La Poterne, and follow theGR® markings, which will be present until the end of the hike.
(12) You will pass through the hamlet of Trossy, at the exit of which a climbing school has been set up on the wall of an old quarry.
(13) Then pass close to the castle and church of Saint-Maximin.
(14) Cross the D62 and continue to the hamlet of La Grande Folie.
(15) Cross the D1016 (be careful, the crossroads is very dangerous due to heavy traffic at all times of the day).
(16) In the Bois de la Coharde, remember to turn right between plots 58 and 59.
(17) At the Porte Saint-Leu, cross the D44 and continue straight ahead to reach the Canal Saint-Jean.
(1) Cross and turn left to reach the car park (S/E).
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