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historicalmarkerproject/markers/HM2BIF_geology-of-the-lake-mille-lacs-region_Isle-MN.html
GEOLOGY OF THE LAKE MILLE LACS REGION Almost all the lakes in Minnesota were formed by glacial action. Many small lakes formed after the glaciers re-ceded and blocks of ice buried in the sediment melted, leaving holes, called kettles, that fill…
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