The ruins at North Salem seem to be of Mediterranean style, possibly Phoenician, dated about 1000 BC. There isn't much question that the Phoenicians were most active just before the rise of what I call modern civilization [Rome]. Hapgood said that he believed the Phoenician era was actually between civilized times, that there seem to have been well-developed civilizations before Phoenicians and those civilizations had declined to practical non-existence. Hapgood also happened to be from a town where there is an underground culture that believes the earth flips on its axis now and then. The idea of catastrophe runs deep.
The word "Tartessian" somehow sums that up: the overlords and businessmen Semitic; the laborers (and seamen) probably often Celtic.
I think it has been proven that the magnetic poles 'flip' from time to time. But, I have difficulty with the axis 'flip.' (what a mess that would be, huh)