Parking: Notre-Dame du Chêne Chapel on the D166.
(S/E) Cross the road and take the path directly opposite to the "Chêne Saint-Louis". Retrace your steps back to the chapel.
(1) Behind the chapel, take a small path for a few dozen metres, then take the path on the right towards Steinbaechlein (marked with a yellow ring).
(2) When you reach the D166 road, follow it to the left to cross the Steinbaechlein, a river that flows from the Doller at the Pont d'Aspach bridge and joins the Ill shortly after Mulhouse
.
(3) About fifty metres further on, leave the D166 and take the first path on the left, which you will follow straight ahead towards the three-hundred-year-old oak tree.
(4) When you reach a crossroads, you will see the three-hundred-year-old oak tree standing like a sentinel opposite the fields on your left (circumference 4.70 m). From there, turn right onto the path leading to the casemates.
(5) At the casemates, take the path on the right and continue along it until you reach the D166 road. Turn right and follow the road.
Leave the road and turn right onto the same path you took on the way there until you reach the chapel (S/E).
Short walk, very beautiful chapel and lovely oak tree. Very pleasant.