As an allegory

Plato claimed to have been told the story by an Egyptian priest.

if you discount the concept of some kind of water bound civilization succumbing from other places

the name isnt exactly important

and lost civilizations are found all the time

you could definitely make the case for quite a few of the mysterious places in myths being simply over-stylized (though true)
https://en.wikipedia.org/wiki/List_of_mythological_places
-Brasil/Hy-Brasil was probably an actual place
-El Dorado was probably a place too (though it's more than likely the case that the Natives just overhyped a place so the Spaniards would just fuck right off)
-Hawaiki was probably also a place (as IIRC, the Polynesians dispersed into various directions from a single island)
-Aztlán might have also been a place somewhere in Northern or Southern Mexico

theres that one lost civilization

in the amazon?

i think

that they eventually found topographical evidence

that they believe proves there was something there

vaguely, ye

but it was probably a bit overhyped, I reckon

with modern technology

things are a wonder

specifically there is now a way for them to take aerial photographs

of jungle

I do vaguely recall hearing of that, though

and use them to determine evidence of stone ruins

i want to say

@Lucienne d'Anwyl have you heard about those alleged ruins off the coast of Japan, hidden under like....10-20 feet of water?

Shaker her I dare you

you should look up the lost city of z

i have not

but there are a bunch of underwaer ruins in the pacifc yes?

i think theres literally smooth seabed there

postulated to be roads

https://en.wikipedia.org/wiki/Yonaguni_Monument