Ross Heaven was described by Guardian newspaper journalist James Shreeve as “the Joseph Campbell of our times”. The director of The Four Gates Foundation for spiritual and shamanic wisdom, Ross is a psychologist, presenter, and the author of more than 10 books on shamanism, plant medicines, and the healing traditions, including The Hummingbird’s Journey to God (the first book to be written about shamanic healing with the plant teacher San Pedro), Plant Spirit Shamanism (about ayahuasca and San Pedro healing and the therapeutic uses of other plants), Plant Spirit Wisdom (about healing traditions and practices with native European plants), and The Sin Eater’s Last Confessions (about the folk-healing practices of Wales).

As well as his work with native shamanism, Ross has visited Peru since the 1990’s to work with the ayahuasceros and curanderos of the Amazon and Andes, and with ayahuasca and San Pedro, the two legendary sacraments and teacher plants used by the shamans of these regions to heal the mind, body, and soul, and to unlock new levels of expanded consciousness.