Viereckschanze

 A Viereckschanze (from German "four-corner-rampart"; plural -en) is a rectangular ditched enclosure that was constructed during the Iron Age in parts of Celtic Western Europe. They are widespread in Germany, parts of northern France[1][2] and also in some regions of the Iberian Peninsula, most notably in Portugal.[3]

Drawing of the Viereckschanze Buchendorf in Germany

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 Metasyntactic variable, which is released under the 
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