Between A.D. 700 and 1100 Native Americans built more effigy mounds in Wisconsin than anywhere else in North America, with an estimated 1,300 mounds--including the world's largest known bird effigy--at the center of effigy-building culture in and around Madison, Wisconsin. These huge earthworks, sculpted in the shape of birds, mammals, and other figures, have aroused curiosity for generations and together comprise a vast effigy mound ceremonial landscape...