Graphic that says mammoth tusks were about 15 feet long

The Iowa Great Lakes were formed as a result of glacial activity in the area. West Lake Okoboji is thought to have been created by the Wisconsin Glacier about 14,000 years ago as it retreated to the north. The Des Moines Lobe of the glacier is what covered Iowa and is what outlines Clear Lake,…

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Photo of the Statue of Liberty

The glacier that sat on what is now the Iowa Great Lakes area was called the Des Moines Lobe of the Wisconsin Glacier, and it was huge! (Read about the landform regions in Iowa) It carved out the lakes, left behind kames and eskers and created fens and kettleholes. It’s hard to imagine just how…

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Photo of kids bouncing on a fen

Walking along the glacial landmark tour inside the entrance of the Dickinson County Nature Center, visitors can to experience replicas of many of the places created by the Des Moines Lobe of the Wisconsin Glacier when it was in the county about 12,000 years ago. From bouncing on a fen to climbing a miniature kame…

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