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Aerial view of the Serre-Ponçon Dam in the Hautes-Alpes, with the lake in the background and mountains in the distance. The reverse indicates that the reservoir holds 1,200 million cubic meters, the dam measures 14 million cubic meters, is 120 meters high, and produces 700 million KWH annually. A handwritten letter is addressed to Madame Declincamp in Pont-Audemer (Eure).