Indigenous

With its cold climate, short growing season, and dense forests, Michigan's Upper Peninsula is known as a challenging place for farming. But a new Dartmouth-led study provides evidence of intensive farming by ancestral Native Americans at the Sixty Islands archaeological site along the Menominee River, making it the most complete ancient agricultural site in the eastern half of the United States.

The site features a raised ridge field system that dates to around the 10th century to 1600, and much of it is still intact today.

The raised fields are comprised of clustered ridged garden beds that range from 4 to 12 inches in height and were used to grow corn, beans, squash, and other plants by ancestors of the Menominee Indian Tribe of Wisconsin.

The findings are published in Science.

"The scale of this agricultural system by ancestral Menominee communities is 10 times larger than what was previously estimated," says lead author Madeleine McLeester, an assistant professor of anthropology at Dartmouth. "That forces us to reconsider a number of preconceived ideas we have about agriculture not only in the region, but globally."

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