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Le Marais Breton

VILLENEUVE-EN-RETZ

Its total area is close to 450 km2.It covers a territory which extends from Moutiers en Retz to the forest of Monts and Machecoul.

LES MARAIS DE MAZEROLLES

SUCE-SUR-ERDRE

The marshlands of Mazerolles occupy a surface of 1,130 hectares (1,350yd2) on the left bank of the river Erdre in the North-East o