The Maya Necklace features a double-sided pendant with two detailed designs. One side represents the Maya calendar, the other side has a combined sun and moon pattern. Mesoamerica’s history and culture is important to the research involved with medicinal plants, as it has helped build a better understanding of how psychedelic plants influenced ancient societies and religion. Many pre-Columbian Mesoamerican cultures used hallucinogenic cacti, plants and mushrooms for medicinal and religious purposes.