1. The construction of effigy mounds was a regional cultural phenomenon, concentrated in Iowa and Wisconsin, but also found in the Tennessee and Ohio River Valleys. 2. Mounds of earth in the shapes of birds, bear, deer, bison, lynx, turtle, panther or water spirit are the most common images. 3. The Effigy Moundbuilders also built linear or long rectangular mounds that were used for ceremonial purposes that remain a mystery. 4. Some archeologists believe they were built to mark celestial events or seasonal observances. Others speculate they were constructed as territorial markers or as boundaries between groups.

Then try StudyFetch, the AI-powered platform that can answer your questions and teach you more about it!