[Bikkuri]

Hmm.. that is a first for me.. put the text separately on top of the pic (never merging), hense no text in the previous post..

Took a screenshot to fix that:

[Deaf Smith]

It is amazing that the voids of shafts directly under each pyramid, were used to hold up the mass of the pyramid.

Other later cultures, would fill such shaft voids with concrete to hold up the mass above that they were building.