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Located in Iowa, effigy mounds are part of the Effigy Mounds National Monument. The monument preserves ancient mounds built by Native Americans. The area is considered sacred by many American Indian tribes.

Effigy mounds are not just any mounds – they are shaped like animals, birds, or even mythical creatures and represent a connection between ancient cultures and the natural world. There are over 200 different mounds here!

Built over 2,000 years ago, the meaning of the mounds remains a mystery, but they probably served as sacred sites, burial grounds, or to mark celestial events.