Coteau des Prairies, Plateau formation in Minnesota and Iowa, United States.
The Coteau des Prairies is a plateau that spreads across several hundred kilometers through the Great Plains of north-central United States. The terrain features gentle rolling hills and fertile soils shaped by glacial deposits from ice age periods.
French and Canadian explorers named this plateau during the New France period. Multiple ice ages shaped the formation through heavy glacial deposits that built up over time.
Native peoples quarried red stone from this region to craft ceremonial pipes, a practice documented at Pipestone National Monument today. The site remains significant for understanding how indigenous communities shaped and used the landscape.
The region offers several viewpoints from which to see the rolling landscape spread out below. The terrain is easily accessible and good for exploring by car or on foot.
During the ice age, two glacier lobes flowed around the plateau and left material deposits up to 900 feet thick. This layering sets the Coteau apart from the flatter plains surrounding it.
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