Plato wrote that the empire of Atlantis extended outside the Pillars of Hercules (Gibraltar) as well as inside (to the Tyrrhenian Sea and Libya), how far outside he did not say, but it was up to the tin where after the Ice Age was called Cornwall (for Corineus a son of the Trojan for Brutus), even to other side of Britain (named Brutus), the Frisians’ Atland, now the Dogger Bank submerged in the North Sea.