Head to the Saint-Marcel cave site on the D290 between Vallon-Pont-d’Arc and Saint-Marcel d’Ardèche.
Park in the small car park on the other side of the road. When the cave is open, you can park in the site’s large car park.
(S/E) From the small car park, take the track leading down towards the Grottes campsite.
(1) Cross the campsite and follow the Ardèche river to the right, upstream (west).
(2) Pass the Rapide de la Caville.
(3) Pass the Cadière rapids and continue to the Fève rapids.
(4) Turn around and follow the route back in the opposite direction to return to the car park at the start (S/E).