The Etruscan town of Spina grew near the southern bank of a Po Delta channel, while its necropolis colonized previous beach and aeolian dune sands. The present-day remains of the town are cut by the erosive contact with the fluvial sand deposits, sedimented during Roman Empire times, a relationship suggesting that a large portion of the Etruscan town remains was removed by the lateral migration of the channel. The town orientation and original extension are hereafter estimated.
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