Cornwall of southwestern England was a tin mining district extraordinaire during the Ice Age (the days of Atlantis), when across the river Fleur Manche (now the English Channel) were the rich tin deposits of the Amorican Massif of far west-nortwestern France, and not surprisingly, submerged Ice Age ruins reported off the Isles of Scilly (Cornwall) and the legendary city of Ys (or Ker-Is) reportedly submerged in the Bay of Douarnenez, submerged since circa 1400 b. c.
