Park in the town hall car park in the centre of the village.
(S/E) Cross Grande Rue at the pedestrian crossing and follow the red and whiteGR® markings, which head south on Rue de la Doue. Walk for about 500 m.
(1) Leave the road that turns right and continue straight ahead on a path through the meadow. Enter the Coteau Derrière Forest. After a short climb, the path descends steeply and arrives at a stream.
(2) Cross the footbridge and continue downhill, following the stream. You will reach a junction where a
sign indicates: Moulin de la Doue - source - waterfall - water wheel.
(3) Turn left and reach the mill and the source of the Doue.
(4) Retrace your steps.
(3) Continue straight ahead along the road that follows the Doue valley for about 500 metres.
(5) Turn left onto the path and cross the Doue. Continue to the right after the bridge, then turn quickly to the left and climb up into the valley.
The vegetation is astonishing. The valley is narrow, the trees are covered in moss and it feels like you are in a primeval forest. The path climbs steeply until you reach border marker 376.
(6) Turn left. At this point, the route leaves theGR®5-GRE2and follows the historic trail of the boundary markers of the Principality of Montbéliard, marked by a yellow rectangle. The difference in relief is noticeable. To the east is the relatively flat Swiss plateau and to the west a very pronounced valley.
At marker 375, the path turns sharply to the right. Walk along the pasture, part of which is in France and part in Switzerland, following the markings. Cross a forest and then another pasture to reach a new crossroads a few hundred metres further on.
(7) Turn left. Leave the hamlet of La Chaifferie du Haut on your right, pass the place called La Queudrotte and keep left at the next fork. Continue northwards, keeping some distance from the border.
(8) Turn left just after the motocross track. 50 metres further on, look out for the sign for the "Sentier des bornes" (boundary stone trail), turn right to enter the Étremay forest and cross it to reach the edge of the D34.
(9) Cross carefully and continue on the path opposite, which is still the "Sentier des Bornes". This path crosses fields and turns left.
(10) At the crossroads, continue straight ahead and leave the Sentier des Bornes. Arrive at the village of Abbévillers via Rue de la Tuilerie.
(11) Just after Rue du Four, look for the renovated building, which is the remains of a lime and brick kiln that operated from 1876 to 1954. Continue along Rue des Tuileries and arrive at the starting point (S/E).