A few days of good hiking in the mountains with Pascal and Hervé from Marseille. We stayed in Hervé's flat in Embrun, a cathedral town on the banks of the big river Durance as it comes down from the Ecrins and the Alps to the Mediterranean near Marseille.
The big lake is the Lac de Serre-Poncon, one of the series of waterworks that supply Marseille with plenty of water from the Alps. The little lake is at 1460m altitude and supplies just the village of St-Apollinaire, whose church you can see in my picture top left. The GR50 is the long distance footpath tour of the Lac de Serre-Poncon.
The rocks are the Aiguilles de Chabrières, 2403m. We didn't get that far as the weather was building to a storm for that afternoon and we had to descend after enjoying lunch at just over 1900m.