I see Graham Hancock in the thumbnail, which means it's entertaining pseudoscience delivered by a genuinely sympathetic guy.
Long story short: Hancock believes there was an ancient Atlantean civilisation that was destroyed during the Younger Dryas catastrophe. Its survivors then supposedly became foundational figures for more recent civilisations. He also contends that Egyptian civilisation is much older than generally believed, and that it's one of the direct heirs to Atlantean civilisation.
This is... not true, for a variety of very clear reasons. But here's the thing: Hancock is the kind of critic of the official narrative that mixes genuinely valid criticisms with obviously incorrect claims. And so it's worth taking a look at what he says, both for entertainment value (basically a smarter "Ancient Aliens") and to see where he might actually have a point.
For instance, Hancock was saying for decades that some of the native civilisations of North America were more developed than generally believed, and this is now turning out to be correct. He also argues that the Americas were settled earlier than believed. In that case, he includes pseudoscientific claims as well, but the general argument is actually solid, and increasingly supported. Likewise, he argued for an expansive Amazonian civilisation... which now turns out to have existed. Similarly, he was early adopter of the impact hypothesis for explainin the Younger Dryas, and I generally find that plausible.
Of course, he connects all this to his Atlantis narrative, which I think is evidently incorrect, but which surely sells books! (Which is why he does it, I suspect.)