The tour starts at the car park behind the church in Oltingue. Follow the Rue de I'Ill to the river of the same name and cross the wooden bridge. Then turn left to Rue del' Eglise. Follow this to the right (trail marker 41). But be careful! At the next junction, turn half left, following Rue de l' Eglise and not the trail markings. You will reach the late Gothic church of Saint Martin along the stream. You reach the starting point on farm tracks through orchards. Easy hike, total distance approx. 3 km, 40 metres in altitude.