I'm writing you from Peru, where my co-author and wife, Susana Bustos Ph.D. and I have been immersed in the vegetalista tradition of shamanism and battling it out in the crazed ecological catastrophe of the San Martin province.
My book, The Shamanic Odyssey, was actually triggered by a conversation we had in the rainforest with an Ashaninkan curandero that we apprenticed with. He had come back to visit us during a long dieta we were engaged in, where we drank medical plants with strong "spirits" or "madres" and while we sat by the river he told us about the spirits that inhabit the Amazonian waterways.
I was struck by the uncanny parallel between his account and Homer's ancient Greek account of Odysseus's encounter with the Sirens. It began a long meditation on the characteristics of indigenous cosmovisions and shamanic medicine, and how present they are in ancient Celtic and Greek texts -- but most notably in Homer's Odyssey.
I believe the Odyssey is a kind of sacred text. It's a nostos, a song intended, originally, to bring back souls from the dead. Our book takes it that way.
I look forward to engaging with members of this community on this rich topic.