Moderator's note: the Blue Disc marked trail between (1) and its junction with the Yellow Chevalet (Steinweg) trail is 
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From the D466 in Oberbruck (Masevaux valley), take the D14b towards Rimbach, then, at the entrance to Rimbach, turn left onto Rue d'Ermensbach and continue for about 300 metres.
(S/E) From the mandatory car park on the left side of the road, walk up through the village of Ermensbach. After the chapel, the road meets the yellow signpost.
(1) At the crossroads, leave the blue disc trail on your right and climb up following the yellow signposts.
After 2 km, just before Lake Petit Neuweiher, you will find the blue disc trail. Follow it to the left.
(2) Go around the Neuweiher lakes on the left. Leave the blue disc path for theGR®531marked with a blue rectangle on the left towards Gresson Moyen until you reach the Gresson farmhouse inn.
(3) At the Gresson Moyen farm, after a short break if you wish, as you will have completed most of the climb, follow the blue rectangle again for a few hundred metres to the right.
(4) Leave the blue rectangle and follow the blue cross markings towards La Roche de l'Enfer to rejoin theGR®5.
(5) Turn sharply right and follow theGR®5trail up to the Col des Charbonniers pass.
(6) When you reach Col des Charbonniers, turn right towards "Tête des Perches" on theGR®5(red rectangle). A magnificent path through the undergrowth leads to a clearing of stubble near the Haute Bers chalet.
(7) Fork in the path allowing you to return to the starting point if necessary, avoiding the passage through Les Perches (short variant in Practical Information).
(8) Continue along theGR®5on a more technical path, which remains fairly easy, to the Col des Perches.
(9) Col des Perches: view of Rouge Gazon on your left. Turn right towards Lac des Perches, taking theGR®531(blue rectangle) on a steep descent.
(10) Go around Lac des Perches on the left. Continue following the blue rectangle markers in the direction of Lac de Neuweiher. Go around Lac du Grand Neuweiher on the left. Return to the intersection you passed on the way there.
(2) Turn right for a well-deserved break at the Refuge du Neuweiher.
(11) Return to the intersection.
(2) Then return easily to the car park (S/E) by following the same route as on the way there, via the blue disc trail and then the yellow trail taken on the way to Ermensbach, then crossing the village.
You can choose to stay on the blue disc path, which runs parallel, if you do not want to take the same route as on the way there.
Just one small issue with the signage at the Gresson Moyen farmhouse inn. It is recommended to take a break there, but it didn't fit in with our schedule, so we decided to continue. However, a sign at the entrance to the farmhouse terrace explicitly prohibits access to hikers. So we took a small unmarked path through the pastures below the farm: given the nature of the route we took (muddy puddles and fences), I doubt it was the right choice, even though we managed to get back onto the signposted path. We probably should have ignored the no entry sign: other hikers may be able to confirm whether it is possible to cross the farmhouse or whether it has indeed become impossible, and may have found a "proper" way to get around the farm and rejoin the route. ... and if so, they can have the route changed on Visorando!
Visorando member
Easy 
Moderate 
