Augraben (rivière) walks

Two centuries ago, the Rhine flowed in braids. From 1842, with the construction of dykes by Tulla, then around 1930 with the construction of the Grand Canal, the river was brought back into a single channel and the Rhine ecosystem was profoundly altered. Today, there is a stark contrast between nature, which is becoming re-vegetated and adapting to the drying up of the river with diverse and unique flora and fauna, and the intense industrial activity surrounding navigation and hydroelectric power.

Between the marina and the Ferme du Moulin, this unpretentious little walk allows you to enjoy the tranquillity of the banks of the Canal de Huningue, the Grand Canal d'Alsace and the Augraben, which still feature a few oxbow lakes and ponds, natural remnants of the old bed of the Rhine.

The Eptingen family, who had already settled on the edge of the Sundgau region in the 14th century, owned both Hagenthal and Neuwiller, where they lived in comfortable castles. This walk crosses their former seigneury and passes through a one-kilometre-wide bottleneck between the borders, as Neuwiller forms a sort of French peninsula on Swiss territory. Text by Marc Glotz taken from the Sundgau hiking guide.

A circular route that mainly follows cycle paths. The route, running alongside the water, allows you to discover the local flora, fauna, history and industry between Kembs-Loechlé and Kembs

The Plaine de l'Au is a wetland area on the floodplain of the Rhine in the Pays des Trois Frontières, where the river, before its course was corrected by dykes (19th century) and then channelled (early 20th century), spread out into multiple branches.Between the Kembs hydroelectric plant to the north and the Grand Marais trail to the south, water accompanies us throughout this route, where biodiversity and human activities strive to coexist harmoniously.The time indicated does not take into account stops at the five observatories and other points of interest along the route. Please note: the Scheidgraben path between (6) and (7) is currently submerged (November 2025), making this hike difficult to complete.

Walk from the car park near the turbine roundabout in Kembs, towards Rosenau Sud along the Rosenau Stream, through Rosenau to the Huningue Canal, then back to the starting point along the towpath.

Do you live in the urban area of the three borders and want to get away from it all without travelling dozens of kilometres? Come and discover the Petite Camargue to get some fresh air and observe many species of birds and plants in a well-preserved area. Leaving from the pretty village of Rosenau, you'll find it hard to believe that you're only 4 kilometres away from the airport as the crow flies.