Pardon my ignorance, but what makes these boxes so unique? This thread made me look into them on Wikipedia, and they seem fairly straight forward..? I'm not a stonemason, but couldn't you basically just carve them out with a chisel (given you're not in a rush)?
A series on YouTube, Origins of Precision, can help you get up to speed.
It is not surprising that historians and archaeologists are not, as a rule, up on that material. But they have no excuse after it was explained to them.
There is also the question of how the boxes were maneuvered down those tiny tunnels that would not admit enough people to do the work.
