Lac de Serre-Poncon
Scenic route met D900 at lake. This is one of the largest artificial lakes in western Europe. The lake is formed by the waters of the Durance and the Ubaye rivers, flowing down through the Hautes-Alpes and the Alpes du Sud to the Rhône River. The lake is dammed by the Barrage de Serre-Ponçon, a 403 feet high earth core dam.
Climbing uphill again, black arrows, through a short tunnel, stopping to rest frequently as it is very hard work. Still heading for campsite at St. Vincent-les-Fonts. A village on top of the mountain 3,280 feet up.