Departure from the car park, Le Dauphin district, near the entrance to the Lafarge factory.
(S/E) From the car park, head north along Chemin des Carrières until you reach a roundabout, where you turn left.
(1) At the Glun dam, turn right onto the path running alongside the Rhône to the Musards basin, where there are two paths: the dyke running alongside the Rhône, and the other below, running alongside the basin, where jousting competitions are held at certain times of the year.
(2) As the map shows, take the path closest to the basin to see numerous birds and nutria.
(3) At the tip of the island, on the left, the Rhône flows towards the dam and, on the right, flows through the diversion canal. Take the path on the diversion canal side.
(4) The path passes under the D259. Continue along the diversion canal for the entire length of the island.
(5) The path arrives at the D268. Cross it and walk along the go-kart track by its northern fence.
The path runs alongside the tracks and enters a wooded area to rejoin the return path.
(6) Head back up the path to admire the first foothills of the Ardèche and the village of Châteaubourg. You will reach the car park where you started (S/E).