The Norton Mound group in Wyoming, Michigan, near the Grand River, is a major prehistoric Hopewellian site in the western Great Lakes. Occupied from about 400 B.C. to A.D. 400, with mounds probably built in the first century A.D., it has been identified as the region’s most important and best-preserved Hopewell mound group. Excavations beginning in 1874 recorded 17 mounds and uncovered burial pits with human remains and grave goods, while later studies clarified their layered construction. Part of a broader ceremonial landscape, the site became a city park in 1936 and later received state and national historic recognition despite ongoing threats from erosion, flooding, and development.