I have no dog in the hunt between “abandonment” and your comment that the greatest mystery is how they got those boxes transported to the niches inside the ‘temple’ or whatever it was.
It seems to me that we could all agree that there are mysteries in the construction of tombs and monuments in ancient Egypt that are difficult to explain with the old standard arguments of “infinite number of workers’ pulling an infinite number of ropes or hammering away with hard stones for an infinite number of years.
I HAVE NO IDEA WHAT THE ANSWERS ARE, BUT I’M NOT SO VAIN AS TO CLAIM THAT I DO OR THAT THERE ISN’T ROOM TO QUESTION THE OLD ARGUMENTS WITH SOME FACTS THAT TEND TO RAISE MORE QUESTIONS.
i didn’t realize I was in all caps and shouting. Pardon me.
:^) I got to where I am by reading a *lot* of stuff, some of which was compelling, some was just silly BS (like Sitchin, Robert K. G. Temple, von Dannikin), much of it was enjoyable, usually there would be new (to me) information that was interesting but either out-of-context, or used in a way that was a non-sequitur or grossly illogical.