From about 200 BC to AD 500, the Ohio River Valley was a central area of the prehistoric Hopewell culture. The term Hopewell (taken from the land owner who owned the land where one of the mound complexes was located) culture is applied to a broad network of beliefs and practices among different Native American peoples who inhabited a large portion of eastern North America. The culture is characterized by its construction of enclosures made of earthen walls, often built in geometric patterns, and mounds of various shapes. Visible remnants of Hopewell culture are concentrated in the Scioto River valley near present-day Chillicothe, Ohio.