a newspaper article about the yanomami people
https://www.theguardian.com/artanddesign/2020/jan/29/claudia-andujar-photography-yanomami-brazil-jair-bolsonaro
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a pretty exhaustive introduction to shamanism ... the link will lead you to a big pdf booklet ... i haven't actually read it !
http://www.sacredhoop.org/Free-Guide-To-Shamanism/Sacred-Hoop-Free-Guide-To-Shamanism.pdf