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Car park: Cabaret Masson site, on the D606 (formerly N6) between Melun and Fontainebleau, just before the Solle racecourse. The car park has been rebuilt and does not correspond to its representation on the map.
(S/E) In the middle of the oval car park, on the side with the cars (furthest from the D606), head west with your back to the D606 and follow the Denecourt-Colinet trail nos. 4 and 3-4, marked in blue and indicated by a sign. Cross a path marked in yellow, then find the sign for blue paths nos. 3 and 4 on the left. Continue to the right towards path no. 4 until you reach the sign indicating the separation of the two branches of this path.
(1) Continue on the left branch, heading west, towards the racecourse valley. Continue winding your way between the rocks (follow the blue markings carefully). Cross Route de la Recherche and then Route Hauy to reach the Grotte aux Cristaux.
(2) After the cave, at the crossroads with paths to the right and left at the foot of a hill, take the stairs opposite to climb up and join the Route du Mont Saint-Germain. Follow this path to the right (east). Pass a crossroads where two paths come in from the left.
(3) Just after this, at the end of a right/left S-bend, turn 45° left onto Route de la Harde. You will arrive at a junction of paths: Route de la Harde, Route de la Crête and Route du Paroir.
(4) Turn left onto Route du Paroir and you will soon find the Blue trail no. 12. Leave the road and follow this marked trail on the left (towards La Table du Grand Maître). Continue until you reach Route du Pavé de la Cave.
(5) Stay on the Blue trail, which turns right along Route du Pavé de la Cave before quickly turning left again. Continue on the Blue trail, which climbs back up to the plateau. Follow the edge of the plateau, with several bends, until you reach Table du Grand Maître.
(6) Leave the blue trail, cross the Route Ronde (take care) and take the trail furthest to the right on the other side. Descend until you reach the Route du Vallon in the hollow and rejoin the blue trail no. 12.
(7) Follow the Blue trail to the left and climb back up to the plateau. At the top, turn right until you cross the Route des Monts de Faÿ and theGR®/TMF(White-Red and White-Green).
(8) Continue on the Blue trail. N.B. Contrary to what is shown on the map, the Blue trail does not take the Route Tournante des Longues Vallées, but first turns right then left to remain parallel to this road. Just before a descent, stay on the Blue trail that branches off to the left to follow the edge of the plateau with a view of the valley. Continue to the Bellevue crossroads.
(9) Continue following the blue markings. Descend into a curious tunnel of greenery to reach, at the bottom left, a crossroads of six roads, including the Route de la Femme and the Route de Chailly à Samois.
(10) Take the blue trail on the right, to the left of the Route de la Femme. Follow it north then east through a beautiful series of rocks. The trail winds through the beautiful Rocher Canon area, so follow the blue markings carefully.
(11) As you approach a car park, turn west and then south, still following the blue markings. Cross the Route du Laisser-Courre. At the T-junction, follow the Route de la Table du Roi to the right and, at the next junction, take the Route des Longues Vallées to the left.
(12) At the Carrefour des Longues Vallées, cross the Route Ronde again (take care) and take the Blue trail on the far left (Route de Solférino). After 250 m, follow the blue markings on the right. Cross the Route de Chailly in Samois, then cross the Route du Limier and the Route des Vieux Rayons. Stay on the blue trail until you reach the D606.
(13) Cross the departmental road (formerly the N6 – caution) and take the blue trail on the right. At the Carrefour des Ventes Bouchard, take thesecond path on the right, still marked in blue. Climb the Petit Mont towards the Butte Saint-Louis.
(14) At the top, follow the blue trail on the right (west). Descend, cross the Route du Houvari and then the Route du Dix Cors and follow it. Reach the foot of the Butte Saint-Louis where you will join the blue trail n°12-15.
(15) Take the path on the right and climb the hill. Cross the hill towards the west, then descend to the south. Cross the D606 (take care) and continue opposite on the blue trail no. 12. Climb back up to the plateau via the Route de la Crête. Be careful, at the top of the hill, the Blue trail makes a half-turn to the right: follow it, turn south-west along the edge of the plateau and reach a new crossroads.
(16) Turn left onto the Blue trail no. 4-12 (link between trails no. 4 and no. 12). Join the Route du Mont Saint-Germain (boundary between gravel and tarmac). Leave the Blue trail and turn left downhill onto the Route du Mont Saint-Germain.
(17) At the crossroads at the bottom of the descent, turn 45° to the right onto Route du Sport. When you reach the D606, you will find the Cabaret Masson car park (S/E).
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