To help our people,” says Walter. Traditionally, the healers would drink ayahuasca and use their visions to understand the complaints of their patients. But those indigenous traditions are changing.

Related: 9,000-year-old rock art discovered among dinosaur footprints ... 20th-century Tucano drawings that portray scenes from ayahuasca visions. "The logical conjecture … is that the central ...

Ayahuasca is a psychedelic brew made from plants and has been used for centuries in traditional shamanic rituals by indigenous people in the Amazon.