09/05/2026
📌 Eagle Mound & Great Circle — Heath, Ohio
📍 40°02'30.56"N 82°25'48.62"W
The Great Pyramid of Giza could fit inside this enclosure, and it's just one piece of a much larger ceremonial landscape.
Part of the Newark Earthworks complex, the Great Circle is one of the largest Hopewell ceremonial enclosures ever built, measuring nearly 1,200 feet across and enclosing roughly 30 acres, its earthen walls still standing 8 to 14 feet high after almost 2,000 years. A monumental gateway about 200 feet wide guides movement into the interior, into what was likely a highly significant ceremonial space.
At the center sits Eagle Mound, a distinctive earthwork whose symmetrical form has long invited interpretation. A deep ditch surrounds the interior, believed to have once held water, creating a powerful separation between the sacred space inside and the world outside. Nearby remnants of Wright Square and other associated earthworks make clear the Great Circle wasn't an isolated monument, it was part of an extensive, interconnected Hopewell ceremonial landscape.
The Great Circle itself doesn't show the precise solar and lunar alignments seen at other Hopewell sites, but it appears to have been deliberately woven into a broader astronomical system anyway. A line running from the center of the Great Circle to the Observatory Circle within the Octagon Earthworks lines up closely with the moonrise at its southernmost point on the eastern horizon. Combined with the Octagon's well-documented lunar alignments, this suggests Hopewell communities tracked the moon's movements over long periods and built that knowledge directly into their sacred spaces.
Only limited archaeological work has taken place at the Great Circle, leaving much of it unexplored. Among the most significant finds were two copper ornaments recovered beneath Eagle Mound, where the remains of a timber structure had been intentionally buried, one shaped like a beaver, the other like a crescent. These were likely tied to individuals who held important ceremonial roles within Hopewell society. The copper itself came from hundreds of miles away, either the Great Lakes region or the Appalachian Mountains of North Carolina, and similar long-distance materials found at other Hopewell sites, Gulf Coast marine shells, Blue Ridge mica, fossilized shark teeth from the Chesapeake, show just how far these ceremonial centers' social and economic connections actually reached.
This hillshade-stretch LiDAR is a repost with updated imagery, and it offers a remarkable look at the scale and sophistication of these ancient constructions. Even amid modern development, the geometry of the Great Circle remains unmistakable, and with only a small portion of the site archaeologically investigated so far, this extraordinary earthwork still has much to reveal about the ceremonies, beliefs, and scientific knowledge of the Hopewell people who gathered here nearly 2,000 years ago.
