you should watch the video:
http://sacredgeometryinternational.com/graham-hancock-and-joe-rogan-discuss-randall-carlsons-paradigm-changing-researchI can’t help feeling that this thing happened so suddenly and in such an extraordinary way, that maybe this is the missing link, that we are looking at the fingerprints of a lost civilization, the survivors of a lost civilization who settled there with all these skills already in place and introduced them into the local culture. Because this period twelve thousand years ago plus, is the period when the earth went through gigantic cataclysmic events because the earth was struck by a comet.
That’s what we are talking about here and you have this episode that geologists call the Younger Dryas, which is an episode of a sudden deep freeze strikes the Earth, the earth has been emerging from the ice age until 12,980 years ago and amazingly you can date it that precisely, give or take 5 years this happened 12,980 years ago, and then suddenly the Earth flips into this thousand year deep freeze. That nobodies ever been able to explain before, that they called the Younger Dryas and we now we can say for sure that the Younger Dryas was caused by huge amounts of dust being projected into the upper atmosphere of the Earth by this comet impact. And that that dust enshrouded the whole earth and set into motion what we would call a nuclear winter today, where the Sun’s rays could no longer reach the earth and the earth went back into deep freeze and to me this is the smoking gun that lost us a whole civilization.
https://en.wikipedia.org/wiki/Younger_DryasThe Younger Dryas is often linked to the adoption of agriculture in the Levant.
For those not familiar with Graham HancockIt's probably not clear to most of you how this is related to Bitcoin, but it is.
