The enigmatic 'Ancient Alien Library' concealed beneath the Great Sphinx

Pure schizoid word vomit. I'm surprised these people haven't moved on to claiming that Egypt doesn't exist at all, that the supposed ancient culture there is a CIA psyop that rewrote history to include references to Egypt. The entire Nile river valley is the giant-sized headquarters of the Annunaki, where they work with Yakub and Xenu to spread the illusion that the world is round—wake up sheeple!

They are very coy about certain individuals who believe this - someone selling a half-arsed mystery-mongering TV show is promoting it but where did it originate from?

Approximately a century ago, researcher and clairvoyant Edgar Cayce first proposed the notion of Atlantis' involvement in the construction of the Sphinx.

Edgar Cayce. So there's no "investigator" actually poking around in the sand doing their own research, no "researcher" misinterpreting hieroglyphics. It's just some geezer who, a hundred years ago, sat around making stuff up.

Just as likely to find the fountain of youth inside my ass.