The Adena culture was a prehistoric Native American culture that existed from 500 BC to 100 AD. They resided in what is now the Eastern United States, focused primarily in Ohio, and parts of West Virginia and Kentucky, during a period known in archaeology as the Early Woodland. They had a unique burial complex and ceremonial tradition, the largest visible sign of which are large earthen mounds spread across the landscape. The Miamsburg mound at 65 feet, is the largest intact mound in Ohio.
They along with the Fort Ancient and Hopewell cultures have come to be known as the Mound Builders, for their large earthworks.