> I was wondering if anything had been excavated, having been
> long buried in sand. As you mention the construction
> materials, has anything been found of such materials, is what I
> wanted to know.
There is some evidence of ramping in the old kingdom in several areas. There's none on the Great Pyramid itself unless you count the causeway as a ramp.
The ends of the main quarry to slope up toward the pyramid and this suggests that this was their route. They were moved up to the base.