Giza Necropolis
the use of an internal or inside ramp. This idea was developed by Jean-Pierre Houdin, a French architect. He has also made detailed computer models of the Great Pyramid. Houdin says that the ramp spirals upward. There is evidence in the notched corners of the pyramid. Not only was the spiraling internal ramp used, but an external ramp was probably used to move the bigger blocks. These are in the lower half of the pyramid and probably used simple cranes to lift them.