Ground sloths and mammoths once roamed Iowa

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, Read More »

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