Archaeologists excavating a ceremonial platform near the banks of Lake Pátzcuaro in Michoacán have uncovered a cache of 'turquoise-inlaid' obsidian scepters. The artifacts, dating back to approximately 800 CE, were found alongside remains of indigenous floral offerings, suggesting they were used in ancient rituals to mark the seasonal arrival of monarch butterflies. This discovery provides the first physical evidence linking the Purépecha people’s ancestors to a 'Butterfly-Arrival' festival, a tradition previously known only through oral histories.
The scepters are intricately carved to resemble wings, and chemical analysis of the adhesive used for the turquoise shows traces of mountain resins specific to high-altitude forests. Researchers believe these items were held by priests during processional dances designed to guide the spirits of ancestors, who were thought to travel within the migrating insects. The site’s alignment with the nearby mountains confirms that the ceremonies were timed precisely with the first sightings of the monarchs each autumn.