Peru-styled polygonal casing stones @ Menkaure
yes, yes, yes, I'm late to the party with Graham Hancock's FINGERPRINTS OF THE GODS revelations... reason being, "I knew all about it and didn't need to read the book," or something.
Fact is, I'd forgotten how insanely over-engineered the inside of the Great Pyramid of Giza is ... it looks more like an Industrial Site or Steel-making foundry or Energy-making power station than some Tomb to some egomanical tribal 'god kings and queens'.
But that's not the kicker, the real kicker in Hancock's 1995 book (yes, I've already read his MAGICIANS OF THE GODS, just last week) is the polygonal wall effect visible in the casing stones of the smallest of the three Giza Pyramids, the one later-attributed to Menkaure.
POLYGONAL WALLS with obscure knobbles reverse-relief carved into them, erm, just like the perfectly fitting monolithic polygonal walls at Cuzco and Machu Pichu and elsewhere in Peru and Bolivia etc. same engineers? same workmen? As far as construction goes, it looks like the Peru-style wall was in the process of being levelled (planed flat, by machine?) when work stopped, or was halted.
I'm sure we're talking neither Egyptian nor South American masons and astrologers here -- more and more it's looking like An Absent Race of Humans we are no longer able to trace. I agree with Hancock that places like Giza in Egypt and Teotihaucan in Mexicco (to name but two such sites) are nothing more than puzzles for future incarnations, future survivors of the Younger Dryas cataclysm. Maybe left to us by an ancient branch of the Human Geneline that might have simply stepped off this world during the last rendezvous with Sirius @ 100 Astronomical Units, around the time the Younger Dryas drama kicked off.
They'll be back in about 10,800 AD if my Sun-Sirius binary predictions pan out...