https://box-elder.blogspot.com/2009/10/dyke-of-duchess-anne-and-series-of.html?showComment=1254777752125
box elder: The dyke of the Duchess Anne, and a series of posts.
La digue de la Duchesse Anne , Duchess Anne's dyke, was the first, mediaeval, attempt to hold back the sea from the coastal marshes around M...
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