"It looks Like": (mis)Reading the Monuments

Chamala Harris ( @Axetrax) producer of hip hop from Arizona knows how the Egyptians did it:

Matt you you agree that the glyphs on walls are pressed into geopolymer that lightly coats the walls? Where the glyphs exist you can see it chipping off leaving grey wall under. Could the great pyramids have been full of those too but they were chipped off completely?

[the alleged 'geopolimer' is the stones from which the walls were built, what Mr Harris takes as the original wall is porous gap-filler, deliberately set off below the face of the inscrition to make clear what is original work and what has been added - a fairly typical technique in the conservation of monuments].

The photo shows part of the wall of the Gateway of Hadrian at the Philae Temple Complex in Egypt. This is a late-period cultic building built between 117 and 180 CE to honour Emperor Hadrian. The part shown in the photo is the latest known inscription written in Egyptian hieroglyphs. The relief depicts the god Mandulis. At the bottom, a text in Coptic is written in demotic script. The Originally located to the west of the Temple of Isis, it's one of the many structures of the Philae complex that were moved to a new island, Agilkia, to save them from flooding by the Aswan Dam. Hence the gap-filling made during the re-erection of the original elements.