Re: Was the Great Pyramid really a tomb?
Not really, no. The space consists of just a couple of very small chambers connected by narrow shafts-- for celestial observation and for initiation to the mysteries.
A really stunning theory of the sort of "ritual" that may have been conducted there is given by Hancock and Bauval in "Message of the Sphinx"
The idea is that the entire Giza landscape was developed as a mirror image of the celestial sphere at the "first time" a/k/a "Zep Tepi," which appears to have been some 10,500 years ago!!! The later rituals were designed for the pharaoh himself- no other. The purpose was to initiate himself in the deeper mysteries of the cosmos and history by making an arduous pilgrimage of sorts, and facing the depths of the true initiate. The aim of true gnosis.
I've never actually been to Egypt myself (and if it weren't so damned dangerous these days, I'd love to go.) Perhaps some day, provided the bastards of this world don't destroy it all first.