(S) From the centre of Marla, leave theGR®-R2 and turn left onto theGR®-R3 towards the three rocks.
(1) As you leave the islet, after crossing a small plateau and a stretch in the shade of the casuarina trees, you begin a descent down a scree slope towards the riverbed. The terrain is rocky, unstable and slippery in places. After fording the river, you’ll find yourself on the other bank of the Rivière des Galets (E).
I’d recommend carrying on as far as Trois Roches. Be careful, though, when the sun is at its highest: in those conditions, the climb back up can be quite tough.