Itinerary certified "Leading Quality Trails - Best of Europe". Starting from Urmatt, the trail leads through the forest to the Stone Gate, a 7-meter wide and 5-meter high eroded rock. The path then leads up to the summit of the Donon (1008m) where a panoramic view offers a unique view of the surrounding area. Gallo-Roman ruins, including a temple, make the place unique. The route then goes down to Schirmeck.