Throughout its history, Effigy Mounds National Monument has used archeologists to learn about the past. Excavations have revealed human remains. These remains point to the fact that the mound may have had several uses other than burial sites. Possible uses include multi-purpose ceremonial places as well as territory markers. Modern technology allows more more knowledge and understanding of the sight. Archeologists have used LiDAR (Light Detection and Ranging) to get a better rendering of the mounds than a survey would give. For a more information about the history of the archeological excavation of the mounds, check out this link. For more information about Effigy Mounds National Monument, visit its website.