They are earthen mounds.
all over Ohio
The various cultures collectively termed "Mound Builders" were inhabitants of North America who, during a 5,000-year period, constructed various styles of earthen mounds for religious, ceremonial, burial, and elite residential purposes.
They didn't. You may be thinking of the mound building cultures in the Mississippi and Ohio valleys.
Effigy mounds are in Iowa. if it helps
No, the Anasazi people lived southwest Four Corners area. The moundbuilders or Mississippian Indians lived the Mississippi valley and in Ohio and Illinois. They were the only ones to build mounds
in ohio and all over southeast USAThe mound builders lived in the eastern part of the U.S.in eastern north America.The Midwest in Ohio Kentucky Pennsylvania and Indiana but mainly in Ohio were serpent mound is locate you can look up serpent mound on Google and find it
The Mound Builders lived in Ohio and all the rest of the southeast area.
That would be Cahokia Mounds in Illinois.
Some mounds were constructed around important public structures, such as temples. A temple would be built, then after a generation, destroyed and covered with earth. Some mounds were created to house burials. Some, such as the Great Serpent Mound in Ohio, are astronomical observations and are aligned with equinoxes or solstices. Some are effigy mounds, that is they are sculpted into representational forms, such as a giant bird. Mounds can be sites of elite houses, council houses, and temples and would be protected from flooding from nearby rivers.
there were 3 mound builders;hopewell, ohio,(i think)and missisipians. i dont know how they were organized.
The ancient Native American culture that used to build these mounds in this area were called Fort Ancient.
Adena and Hopewell