Mr Houdin said that an outer ramp all the way to the top of the pyramid would have blocked sight lines and left little room to work, while a long, frontal ramp would have used up too much stone.Link (via Fortean Times). Apparently had they left the ramps in place, the pyramid would have been ADA compliant.
Further confusing matters, there is little evidence left of external ramps at the site of the Great Pyramid.
Mr Houdin said the pyramid could have been built by 4,000 people using his technique instead of 100,000, as postulated by other theorists.
Indexed by tags science, architecture, engineering, mysteries, pyramid, Giza, Egypt, internal ramps.