Effigy Mounds National Monument is located 3 miles north of Marquette, Iowa on the Mississippi. This collection of mounds are the largest groupings found in America. The mounds were built by the Hopewellian and Oneota Native American Indian cultures anywhere from 1500 to 750 years ago. The mounds are in the shape of bears, eagles, and cones. Some of the mounds were for burial, others may have been ceremonial. In any event, this Monument is a historically important archaeological site in North America.
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