America has the largest and most complex formations of geometric earthworks in the world and the largest mound (near St. Louis) has a base larger than the Great Pyramid. This guidebook describes mounds in 41 states and contains over 1100 site descriptions, many of which are large mound complexes with museums. This encyclopedia is the most comprehensive guide in existence to America's mounds and earthworks from ancient history. Sites are arranged alphabetically by state and include: Archaic sites, Adena culture sites, Hopewell archaeology and mounds, and Mississippian sites. The book contains nearly 900 photos, maps, and illustrations, 80 site reconstructions made by archaeological illustrators, rare photos of stone chambers and artifacts found in excavated mounds, and an extensive index of 2300 entries listed by state, containing all site and mound names along with locations. The book is a large hardcover (8.75 x 11.25) with green and red cloth with gold foil stamping (no paper jacket). This Native American book is a revised, updated, and enhanced version of the first edition.