ITT we unkike our history, and discover our ancient knowledge.
According to Graham Hancock the pyramids align with the orions belt in their positions 12500 years ago which is the same point of time the constillation of draco alignes with angkor wat perfectly (also according to graham hancock) making me think a great cataclysm, which probably was the rain of fire the aztecs say came before the flood, happened shortly after those 2 were built (or in case of angkor wat they were build not that long ago but on older remains which are probably from that time).
Turns out there was an "extraordenary biomass-burning episode" 12.800 years ago, likely due to the impact of a comet which just came out recently, fitting the 12.500 years Hancock talks about almost perfectly
http://www.journals.uchicago.edu/doi/10.1086/695703Which also fits Göbekli Tepes depiction of the comet 12.900 years ago quite perfectly
Some other interesting stuff showing ancients knowing a lot they shouldnt according to Mainstream History.
https://www.youtube.com/watch?v=L777RhL_Fz4 This one is partly about modern monuments and their meanings too, but at around 1:10:00 he starts talking about the pyramids, and how they encode the size of the earth in relation to the moon, as well as the speed of light with over 99% accuracy
https://www.youtube.com/watch?v=7nUmEbjSoHs This video talks about how different monuments, from the pyramids, to stonehenge, to stuff in south america encode mathematical knowledge as well as functioning as a GPS telling people where they are currently switching the 0th longitude to the pyramids if they know how to read the monuments, again showing that those "cavemen" were far more sophisticated than we care to admit as well as showing that there was some kind of global communication going on (not like the internet, but information were exchanged through traveling, trade or whatever despite southamerica not being discovered officially until thousands years later)
