Serpent Mound in Adams County, Ohio, is one of North America’s most remarkable ancient earthworks. It stretches over 1,300 feet; this massive symbol resembles a winding serpent with its mouth open, possibly swallowing an egg. Its origins, purpose, and precise construction methods remain a mystery, adding to its intrigue.
The Construction of Serpent Mound
The Mound was built by carefully shaping layers of soil and clay into its iconic serpent-like form. Ancient builders likely used wooden tools and woven baskets to move and shape the earth. The Mound follows the land’s natural contours, making it appear even more striking from above. Despite centuries of erosion, the structure has remained remarkably intact, highlighting the engineering skills of its creators.



The Cultures Behind the Mound
Archaeologists debate whether the Mound was built by the Adena culture (1000 BC–200 AD) or the Fort Ancient culture (1000–1650 AD). Some evidence suggests the site was built in phases, possibly by multiple groups over time. Regardless of its builders, the earthwork’s purpose remains unknown.
Celestial Alignments and Spiritual Significance
Many believe ancient builders designed the Serpent Mound to align with the stars. The serpent’s head points toward the summer solstice sunset, while its curves may mark lunar and planetary cycles. The Mound’s design hints at a deep understanding of astronomy, possibly serving a ceremonial or spiritual purpose. Some believe it reflects religious beliefs or marks important geographic or spiritual boundaries. Researchers continue to explore these theories, uncovering new insights along the way.
A Destination for Exploration and Reflection
The Mound draws history buffs, stargazers, and nature lovers with its intriguing past and scenic surroundings. Visitors can walk the trails, read interpretive signs, and stop by the mound to learn more about this ancient earthwork. The surrounding nature preserve offers picnic spots and stunning views of Brush Creek Valley, making it a great place to explore and unwind.



The Lasting Mystery of Serpent Mound
Despite ongoing research, experts still puzzle over the Serpent Mound, and visitors continue to explore its mysteries. Some believe ancient builders designed it as a celestial calendar, a sacred site, or for another purpose. Its design reflects the skill and knowledge of the cultures that built it. Experience the wonder of the Serpent Mound and walk in the footsteps of those who shaped this incredible earthwork centuries ago.