If you're not familiar with Christian Raetsch, he's written a wonderfully comprehensive Encyclopedia of Psychoactive Plants (translated to english in 2005... I picked it up for $80 and consider it a bargain, the book is amazing). He's a very interesting individual and a great cannabis advocate.
This talk in particular comes from his experiences with Himalayan shamans. Lots of intresting background on their practices in the context of the talk. I highly recommend giving it a watch. He's German, but his accent is quite clear.
This talk in particular comes from his experiences with Himalayan shamans. Lots of intresting background on their practices in the context of the talk. I highly recommend giving it a watch. He's German, but his accent is quite clear.