> Well, I just picked the words "blast gate" off the top of my
> head. I was actually thinking of a fire and/or explosion
> barrier. I am not absolutely convinced that this is what the
> slabs were used for, they just remind me of a protection
> device. Multiple slabs may have been needed because of a
> possibility of an extreme blast or fire.
I thought so. I think it is interesting, but I'm still leaning towards flow regulation. Is the wear to the Great Step from rubbing or something pouring down it?
> I am a bit stumped on the probability that the granite plugs
> are not plugging an opening but are resting in a dead-end
> space. That means that there is either another entrance which
> has not been found or the well shaft served as a very
> unprofessional way to get to the grand gallery, king and
> queen's chambers.
You might be right, but isn't one of the plugs cemented in place?