> The following pic shows the props on the face. One is huge.
That one is hard to miss, it spans 5 courses.
> Good questions are : Who got it up there? How? And when?
If the egyptian military didn't do it, it's fair game for guessing.
> As for the deeper scarping, those blocks may have been smaller
> in size than those lower down, and the Arabs found it easier to
> pilfer them. Maybe, they removed too many which caused the
First we would have to rule out, or try to identify which sections, if any, are the result of modern repairs, as Thanos mentioned.
It could have been the Greeks and Romans, likely candidates IMO.