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Fig. 4

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Photo de 1948 des gorges du Drac en amont du barrage d’Avignonet, montrant la « zone des entrées » du ravin du Cros. Le trait noir indique le sommet de la falaise liasique et le trait rouge la courbe de niveau 515, cote de la retenue projetée – Document inédit EDF.

1948 view of Drac gorges upstream to the Avignonet dam, showing the “inlets” of the fossil streams. Black line is the top of the Jurassic cliff and red line is the level 515 – EDF unpublished.

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