Atlantis? Not likely.
If you believe in numerous 'near-extinction' events, as I do (most recently at 540AD, The Dark Ages), it is amazing that any information from our distant past makes it through that 'filter(s).' Any information that survives through these events at all is amazing and likely to be very sketchy, garbled and misinterepted. (most certainly we have many things wrong.) Plutarch, visited Carthage years after it was sacked and reported seeing records in the ruins of transAtlantic trade with a great power on the western side of the Atlantic. (The Sea People?)
Sea People
The ancient Near East saw monumental changes in the 13th century BCE. The palace cultures of Crete, Mesopotamia, Canaan, and Hattu vanished en mass. Though the reasons for their disappearance remains difficult to pin down, one major factor appears to have been the migrations of the Sea Peoples.
We first hear of the Sea peoples during the reign of Merneptah (1224-1214 BCE) who describes a group of mixed ethnic affiliation attacking his Western frontier by land, and Northern flanks by Sea. The mention of Libyans among the Sea Peoples as arriving in wagon hordes with families suggest that the movements were economically motivated or the result of a large-scale famine.
The Sea Peoples are again mentioned during the reign of Merneptah’s successor Ramesses III (1182-1151 BCE) who in his eight year states:
"The foreign countries formed a conspiracy in their islands. All at once the lands were removed and scattered in the fray. No land could stand before their armies; they desolated people(s). They came toward Egypt; their confederation included the Philistines, Tjaker, Shekelesh, Danuna, and Weshesh, lands united."
Since several of the groups named do not appear also in Merneptah’s list, scholars have seen this second movement of Sea People as symptomatic of a larger Near Eastern crisis.
The Philistines, who first appear here, emerge later in the biblical record as the archenemies of the Israelites. In any event, the result of the Sea People’s attack was disastrous for Egypt, for Egypt was plunged into a sort of dark age
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.