Mound sites are archaeological locations where earth mounds have been constructed, often by ancient cultures. These mounds can serve various purposes, including burial sites, ceremonial platforms, or markers for important events. They are commonly found in regions like the Mississippi River Valley and are associated with cultures such as the Mound Builders. The construction of mounds typically involves piling soil and other materials into a specific shape, often resembling a cone or a platform. Some mounds contain artifacts, human remains, and other items that provide insight into the social and spiritual practices of the people who built them.