Park in the Sundgau media library car park.
(S/E) Return to Rue des Vallons, then turn left. After 150 metres, turn left up Rue de la Roselière.
(1) When you reach the crossroads, turn right onto Rue des Bosquets, which is a gravel path, and follow the signs for "aire de pique-nique" (picnic area).
(2) After the picnic area, continue along the path that goes up into the woods on the left and follow the Green Ring markings, which will later join the Blue Ring.
(3) After about 1.5 km, when you reach the forest path, turn left and leave the Anneau Bleu.
(4) A few metres further on, leave the Green Ring and turn right, following the Yellow Ring.
(5) When you reach the "Buchweg", turn right and continue to follow the Yellow Ring.
(6) Cross the road and follow the path on the left that enters the woods, still marked with the Yellow Ring.
(7) When you come out of the woods, turn right and go down to the Erlen Pond, walk around it and go straight up the path to the road.
(8) Turn right and follow the road to the reservoir (admire the scenery on the right), then walk down Rue du 2e Cuirassiers to the roundabout.
(9) Cross the road and go up Rue du 7 Août until you reach the junction with Avenue du Maréchal Foch.
Turn left for a few metres, then immediately right at number 16a to reach the media library (S/E).