As one example of corroborating evidence, there is the evidence for water erosion of the Sphinx that would put its existence back to a time before that area became a desert, which would pre-date the Pharoahs: https://www.robertschoch.com/sphinx.html
—
Alternate theory is that the erosion was created by the Nile being directed into the Sphinx moat for ceremonies and the most having to be dredged of sand accumulation. The dredgers would stand on top of the embankments and drag a dredge around, hauling the spoils up out of the moat, creating water erosion over thousands of years of use. There used to be a site, Egyptian Dawn, with dozens of close up images of the moat gate hinge points and other remains that indicate this as the real cause, but its gone now. Most of the images are still available in the book of the same name by Robert Temple, out of print and pricey at $40-67 a copy.