This hike takes you through the picturesque pond landscape of the Sundgau region. Start at the church in Ueberstrass. From there, walk along the main road towards Seppois le Bas to the "Notre Dame du Grünenwald". Shortly before leaving the village, turn half right into Rue des Étangs and follow this road across the main road to the beautiful avenue that takes you to the pilgrimage church. Easy hike, total length 4 km, 80 metres in altitude.