The marsh was renowned, from the Middle Ages to the 18th century, for its salt marshes that raised the Breton Marsh to the status of the largest salt producer in France from the 15th to the 18th century, with 30,000 tons produced per year. The boats were loaded at the Port du Collet.
Source: Agence Régionale des Pays de la Loire
Copyright: Creative Commons 3.0
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Address: Port du Collet, Les Moutiers-en-Retz
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