Supposedly there is this documentary on Netflix that shows some good evidence that an advanced Atlantis type civilization was destroyed in about 13,000 BC by a comet or something like that. This would push back human civilization from the hunter/gatherer stage back quite a bit, since most anthropologists say civilization as we know it started about 4,000 BC (even though sites in Turkey already show that is wrong).
This documentary has all the experts class people riled up about his apparently popular Netflix show. On Twitter, I see Bible believers of one stripe or another saying it's evidence for a flood type event from Genesis, which exists is most cultures' mythology. This may or may not be the case. Atlantis is a popular idea too, and the Atlanteans may have spread civilization out to the hunter/gatherers after the loss of their homeland in the flood.
I intend to watch it this weekend. Here's an article on it.
It's Graham Hancock's vision and pet project. It has legs to it. there is a c. 12-13K year cycle with sun going micronova, crustal displacement, displacement waves (think huge tsunamis), biblical style flooding and rapid change in magnetic and climatic conditions on earth.
We are closing in on this, you trust the astronomical observations and the geomagnetic shifts now happening around us (magnetic poles are moving at an accelerating rate).
If you are not up to speed with Suspicious 0bservers on this, I recommend it as a good start:
https://www.youtube.com/watch?v=ihwoIlxHI3Q
In the Ancient Apocalypse show, they were discussing the possibility that the regular catastrophes on earth were caused by comet impacts. This was due to a massive comet which broke up, leaving smaller fragments (though still quite large) in a trail through the solar system, which the earth travels through every year. All of the meteor showers we see every year are due to these debris fields. The term "comet" describes any object made of dust and ice which formed in the Oort cloud and/or Kuiper belt of our solar system, beyond the orbit of Neptune. For example, Pluto is a comet. Although, astronomers have found comets larger than Pluto, and many of them have long elliptical orbits which take them close to the sun, and possibly a collision course with another planet.
However, due to predictable changes in orbit over time, the earth passes through denser parts of that debris field every 10,000 years or so, causing catastrophic impacts from the larger pieces of debris. It was the Orionid, Taurid, or Leonid meteor showers. I can't remember which, but they discuss it in the show. In any case, they used astronomy as a guide to study ancient sites, and found a lot of them pointed to specific parts of the sky, as if as a warning. It's not conclusive, but definitely intriguing.