More mounds were built by ancient Native Americans in Wisconsin than in any other region of North America--between 15,000 and 20,000, at least 4,000 of which remain today. Most impressive are the effigy mounds, huge earthworks sculpted in the shapes of thunderbirds, water panthers, and other forms, not found anywhere else in the world in such concentrations. This second edition is updated throughout, incorporating exciting new research and satellite imagery. Written for general readers, it offers a comprehensive overview of these intriguing earthworks.

Citing evidence from past...