Another thing is that I find a striking similarity among S. divinorum reports... from the threshold "itching" or "pins-and-needles" to the breakthrough hall-of-mirrors-and-gearlike-constructs... when you talk to people who know, the similarity is downright eery. It's like everyone has the same trip. Or that there is only so much that can happen, and everyone gets a certain number of the attributes...
Like, splitting into infinite reflections of the self
what can only be described as the-deck-of-cardsification of reality (everything besides the self is split into infinitely repeating reflections)
more fanciful and phantastic infinitely repeating patterns.
( note that infinite repetition is the ubiquitous function)
A near-universal feeling of general discomfort, for me usually as the sensation (I would imagine) of having the epidermis removed all over my body.
A bizarre laughing fit (and 50% of the time, drooling fit), despite the fact that nothing at all is funny in the slightest.
A strong sense of paranoia, if others are present.
And a feeling of "I have been here before", or remembering the "point", but only for the duration of the breakthrough.
I have come to think of it as a practical joke played out in dimensional terms. There's a strong sense of "they're fucking with me!" ; my very first excursion into the land of the Salvia-giants, I forgot that I was on salvia and thought that everyone was playing some kind of joke on me...!
Oh, yeah, and maybe 20% of the people I have talked to have reported encounters with "giants", usually very old, and who want a good answer for why you are in their realm... I once "became" a giant standing knee-deep in a virtual ocean...