Serpent Mound: Ancient Ruins, Evidence & Theories

A quarter-mile serpent aligned to the stars — built on an impact crater. Explore this ancient site in United States. Discover evidence, competing theori...

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About Serpent Mound

Theory Evidence: Moderate

Stretching 411 meters (1,348 feet) across a plateau in Adams County, Ohio, Serpent Mound is the largest surviving effigy mound in the world, depicting an uncoiling serpent with an oval shape at its head often interpreted as an egg or the sun. The mound averages 1.2 meters in height and 6 meters in...

Serpent Mound is an ancient archaeological site located in United States. This site has drawn attention from mainstream archaeologists and independent researchers alike for its construction techniques, historical significance, and the questions it raises about ancient human capabilities. Explore detailed evidence, competing interpretations, related theories, and connections to other archaeological discoveries around the world.