Park in the car park before the first houses of the Kohlthalerhof.
(S/E) With your back to the car park, follow the Route d’Imsthal to the right for a few metres, then take the path branching off to the left. The path (marked with a Red Saltire) passes in front of the Moulin de la Petite-Pierre and continues to the right. Ignore the paths branching off on either side. You will come to a fork.
(1) Turn left at the hairpin bend and follow the path towards Langeck – Rocher des Païens (marked with a Red Diamond).
(2) Leave this path and follow the path to the right (marked with a Yellow Cross) towards the Grand Chêne.
(3) Follow the path branching off to the right (marked with yellow-white-yellow Yellow Rectangles) which passes via the Muckenkopf and follow it to the Rocher Blanc.
(4) Turn right and continue on the GR® 532 (marked with yellow rectangles and yellow-white-yellow rectangles) to reach the Petite Pierre.
(5) Leave the GR®532 and follow the small path that runs alongside the woods and climbs towards La Petite Pierre. You will come out onto Rue Principale.
(6) Follow it to the right until the next junction. Leave Rue Principale and turn left onto Route d’Ingwiller. A few metres past the post office, take Chemin Imsterberg, which branches off to the right (marked with a Yellow Diamond). Continue to the next junction.
(7) At the fork, leave this path and follow the trail marked with a Red Triangle on the left. Join and cross the D134 with care to reach a car park a little further on, just before the Rocher de la Grenouille.
(8) Turn right onto the path just behind the wooden sign (marked with a Blue Saltire) and follow it to the Loosthal Forest House.
(9) Take the path branching off to the right (marked with a red-white-red Red Rectangle) to reach a road further down.
(10) Follow it to the right, passing in front of the Imsthal Inn.
(11) A few metres past the inn, leave the road and follow the path marked with a Yellow Triangle on the left, which leads back to the car park (S/E).