Take a gander at ms_manic_minxx's "All About Aya <3" sticky over in the ayahuasca section. Ayahuasca is the term you are looking for, and you damn well can take concoctions of plant material instead of some snazzy freebase tincture.
But it's not just "soaring for a couple of hours", be warned, you are getting into the realm of strong plants.
I'd also like to say that it sounds like you need to do more research... these are fairly basic questions you ask, even if you've already read, just read and read some more.
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