In my opinion the better evidence that some civilization more advanced than we realize existed is simply knowledge that does exist in the historical record. But the origin of said knowledge is unknown and it was highly unlikely scholars of the period had any way of knowing.The likelihood is that Atlantis is a composite myth referencing multiple real events and places. Like King Arthur, Robin Hood or dare I say... Jesus.
So there's people known out past Gibraltar (Spanish/Moroccan Coast or even Canaries/Azores), there's ancient seafearing civilisations half remembered (Phoenicians/Sea People), there are known destroyed cities (Thera eruption destroying whatever was on Santorini or the Minoans on Crete), there's cities with elaborate earthworks and better technology...
So you slam it all together to make whatever allegory Plato was trying to make like he's an ancient JRR Tolkien. Fiction wasn't suddenly invented a few hundred years ago!
But nobody went around the world making pyramids, because they would leave archeology, linguistics and genetics behind. Unless it's magic which is what ancient astronaut theorists always fall back on to explain away anything that disproves this shit.
I am fascinated by ancient mysteries, lost civilisations and sunken lands. I remember reading about Mu and Lemuria as a kid. But there's real stuff that fascinating (Gobekli Tepe etc), we don't need to keep beliving this.
Like gobekli tepi had a level of advancement 7k years prior to the "best available evidence" we had. This does not mean space age technology or anything like that. Just they were far more into the bronze age or even iron age technology than should have been possible.
So we see things like ancient Greeks having somehow learned that the the Sahara used to be nice and green and that was 8 thousand years before them. That was passed down through the ages somehow and this was also true. Similarly "Atlantis" was also passed down through the ages and has some real truth to it. Whatever it may be. I don't find the idea that Atlantis being a civilization that existed during the African humid period being too far off course or unrealistic.
Other things like middle ages maps that had landmasses on them they shouldn't have known about or the interior of Africa mapped with some degree of accuracy centuries before they should have and also depict African humid period tell us that something was indeed there. Likely under a mountain of sand at this point.
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