Nendaz-Barrage de Cleuson Bike

Leave from Haute-Nendaz to first reach Siviez before joining the Cleuson dam. Built between 1946 and 1951, Cleuson can hold 20 million cubic metres of water. It is a reinforced foot-hills dam standing 87 meters high and 420 meters wide at its widest point. But its reputation stems above all from its bluey-green toned waters.