Guess you never heard of G.E. Kincaid and his discovery in Marble Canyon, which held an ancient Egyptian/Tibetan Buddhist city.
https://www.ourstrangeplanet.com/may-2012-expedition-to-sipapu-the-place-of-emergence-part-two/
Grand Canyon Hidden Civilization Cover Up
https://hooktube.com/watch?v=FNQgSX17P8Q