This fantastic trail begins with the Combatseline chairlift from Siviez. From the mountain station, the trail leads along the Ancien Bisse de Chervé to the Refuge de St. Laurent (2522m). This is located directly on the beautiful Lac de Cleuson (2179m). The steep descent leads along the eastern shore of the lake and over the dam wall down to Siviez. Further information, timetables and prices for the Combatseline chairlift can be found here: https://www.nendaz.ch/en/P76604/combatseline-chairlift