The landscape of the bi-state region was shaped millions of years ago by the movement of glaciers across the region. Click on the links below to learn more about the geological landscape that comprises the proposed Hackmatack National Wildlife Refuge study area.

See maps of the Ice Age glaciers that once covered the Midwest HERE

Click HERE to travel virtually through time to see how the landscape of Illinois was shaped by geologic forces.

Take a look at the action of Wisconsin’s ancient glaciers HERE

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