> Yes, just about no trace.... except for the actual traces they
> left behind. There is nothing preventing the ancient Egyptians
> from lifting the 50++= ton granite roofing beams to the Kings
> Chamber so there really should not be anything preventing much
> smaller blocks from being deposited even higher using the same
> level of technology.
No! There is no trace of ramps on the pyramids.
This is no small matter when you can see literally hundreds of lines on the great pyramids and every single one of those lines is horizontal or vertical to the surface. This strongly indicates (virtually proves) there were no spiral ramps and that was about the last leg for ramp proponents to stand on. There's still some possibility of internal ramps or one side ramps but these will fail on closer inspection as well.
While the 50 ton slabs being elevated to such a low level isn't of itself so very impressive we're still left with no visible means of support for the top of the pyramid. There were no ramps and it's not reasonable to suppose millions of tons of stone were levered up the sides of the pyramid.
This question really deserves an answer.
How did they really raise the stones?