Hiking in Wisconsin’s Kettle Moraine

Wisconsinites might grimace at how rough winters can get these days, but 20,000 years ago much of the state was under a sheet of ice thicker than a mile in some places. This Laurentide Ice Sheet extended south of Chicago. One of the most fascinating marks it left as the ice melted was the Kettle Moraine. A “kettle” forms when debris from a grinding glacier gathers in a...

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