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The Ardèche River entrenches a deep canyon in the Saint Remèze plateau from Vallon-Pont-d'Arc to its confluence with the Rhône. This plateau is part of the Ardèche Cretaceous limestone plateau located at the edge of the Mid Rhône valley. It is characterized by dense multi-level cave systems, such as Saint-Marcel Cave (50km of mapped passages) and Chauvet Cave, famous for its paleolithic paintings...
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