In May 2012, Soundwalk Collective traveled into the heart of the Peruvian Amazon to document the ancient chanting rituals of the Ayahuasquero, the Master Shaman and practitioner of plant medicine. The shaman consumes a potent brew made from the Ayahuasca, a sacred vine of the Amazonian jungle, the "vine of the souls". The brew induces a powerful psychedelic experience that causes visual and auditory hallucinations. This hour we present a radio essay by anthropologist Jeremy Narby, a impressionistic mix of the recordings of the Collective's time with this plant and these people.