In this June 22, 2016 photo, boatman Sebastiao Melo pilots his boat through the Igarape Mapia river towards the Ceu do Mapia community in Amazonas state, Brazil. This community revolves around an ancient psychedelic tea locals know as the Holy Daime. The Ayahuasca brew is sacred to Ceu do Mapia villagers, who use it in rituals that blend together Indian beliefs with Roman Catholicism. (AP Photo/Eraldo Peres)

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