[jcranmer]

Not having listened to it, I'd guess he's referring to https://en.wikipedia.org/wiki/Richat_Structure, a very large circular rock structure in Africa. And also one where the archaeological evidence shows nothing more than periodic visitation by nomadic peoples, nothing like the supposed state society Atlantis would have been.

[WhereIsTheTruth]

If you can't imagine a green Sahara, can you imagine a rich Civilization living there?

The transition is hard to believe, yet has happened multiple times

https://www.helsinki.fi/en/news/climate-change/new-research-...

[gherkinnn]

A rich civilisation (possibly in the millions), leaving absolutely no trace in any shape or form? Maybe time to apply Occam's Razor.

On the other hand, a green north Africa is well established. And it turns out that the Ancient Egyptians might have descended from hunter-gatherers who were driven towards the nile as the grasslands gave way to desert. For all of which there is archaeological evidence.

[jcranmer]

I can imagine a green Sahara, as I could imagine a civilization. What I can't imagine is a civilization that exists without leaving any archaeological trace of itself.

[LargoLasskhyfv]

What about catastrophic tsunami induced by asteroid impact? That's one of the theories in the context of that structure as Atlantis. There are people who think some of the geologic features surrounding that place lead to that conclusion. Comparable to the things found in North-America, where there is no doubt at all that these are traces of catastrophic flooding at laaarge scale.

Anyways, theory is that giant masses of water rushed from somewhere of what is now the southern or southwestern cost of the mediterran sea(Lybia, Algeria), downwards and westwards, until reaching the Atlantic. Not gently at all.

What do you expect to find there, especially after so much time passed?

The hardened pyramid defence bunkers of the Kinks of Koulou?

[jcranmer]

> What about catastrophic tsunami induced by asteroid impact? That's one of the theories in the context of that structure as Atlantis. There are people who think some of the geologic features surrounding that place lead to that conclusion. Comparable to the things found in North-America, where there is no doubt at all that these are traces of catastrophic flooding at laaarge scale.

It's ~400m in altitude, approximately 500-600km inland, and not along a major watercourse like the Mississippi river that might funnel tsunamis inland. So... no, it's not plausible for this structure.

[LargoLasskhyfv]

Mhhh... Just for fun:

https://beyondenigma.com/richat-structure-atlantis-10-pieces...

Point 6 and 10, or some video on yt by 'Randall Carlson' like this:

https://www.youtube.com/watch?v=LOtydLmdfV8

or 'Bright Insight': https://www.youtube.com/@BrightInsight

and countless others riding that wave.

Yes, I'm aware of their other activities, that it could be considered clickbait, scamming naive people into subscribing to their premium content elsewhere, or whatever.

While I don't believe in much other stuff they are propagating, this seems to be at least usable as 'work(ing) hypothesis' in the sense and meaning that it isn't more absurd, than so much else we subscribed to by 'tradition'.

I won't go further into that now, because I had my fun/enlightening/scam/brain wash/whatever with that a few years ago, and won't budge an inch into my acceptance of the possibilty that it could have been.

Thereby shrugging off any disagreement :-)

I do mine. You do yours.

[huytersd]

It’s very easy to imagine a green Sahara. Where do you think all the oil in the Middle East came from.