The Effigy Mound tradition of Wisconsin dates to between roughly AD 100 and AD 1400. Its center is in central and southern Wisconsin, with a handful of sites also found in Illinois, Iowa, Minnesota, and Michigan. During excavation at two major Effigy Mound sites--the Bigelow site and the Sanders site--William M. Hurley and his crew recorded 56 mounds, 91 features, 3 houses, and 10 prehistoric burials, and uncovered more than 55,000 artifacts.
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