In the early part of the 20th century, Raimundo Irineu Serra—known today as Master Irineu—ventured into the Brazilian Amazon to work as a rubber tapper. There, he encountered the practice of drinking ayahuasca. During an extended participation in this ancient ritual, he received a vision from what he perceived to be the Virgin Mary. She instructed him to establish a specific spiritual doctrine. In 1930, Master Irineu formally established the first church of the Santo Daime.