Ancient American Indian architects designed the earthen walls of Newark’s Octagon Earthworks—now part of Ohio’s Hopewell Ceremonial Earthworks, a UNESCO World Heritage Site—with the 18.6-year lunar cycle in mind.

Built about 2,000 years ago, the earthen gateways and avenue that connect the Observatory Circle to the Octagon align perfectly with the northernmost moonrise. The close connection Indigenous peoples have with the land and sky is truly evident when you witness this event in person. The evening will begin with a talk introducing the Hopewell culture and the period in which the earthworks were created, plus a brief explanation of the 18.6-year lunar cycle. After the talk, we’ll journey into the center of the Observatory Circle to see the moon rise at its northernmost point, aligned with the earthen gateways and avenue that connect the Circle to the Octagon. Please dress for the weather, wear comfortable walking shoes and bring a blanket or folding chair.

This event is free with required preregistration.