Or it may have been enough that 'magical' links with special regions of the north and south parts of the sky were established
It may have been enough that viewed from a central relative position certain stars/constellations set upon the horizon behind the pyramids (or rose directly across through centre), and thus in a sense could be associated with them, a greater context for the essentialy solar symbolism of the pyramids themselves. Probably the greatest irony is that in attempting to identify the Giza pyramids directly with particular stars of Orion, no serious consideration was given to their horizons, positing G2 as the centre of some conceptual circle actually negates any possibility of it having relevance to an horizon event...what a horror show OCT was.
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Morph.