I definitely need to take Toyota cruise through some of them to discover more of my own country's huge, diverse landscapes.
Some hills of the US midwest:
-The Sandhills of Nebraska
-The Flint Hills of Kansas
-The Black Hills of South Dakota
-The Driftless region of Wisconsin, Minnesota, Iowa, Illinois
-The Loess Hills of Iowa
Sandhills, Nebraska - home of great Sandhill Crane migration on the Platte River every summer
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Flint Hills of Kansas
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Black Hills, South Dakota - home of Mount Rushmore
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The Driftless region of Wisconsin
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Broken Kettle Grasslands in the Loess Hills, Iowa - home of 135 bison
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Map of North America during the Last Glacial Maximum i.e. farthest extent of ice during the last Ice Age including many areas of the Midwest under ice. Advancing and retreating ice scoured the region, leaving smoothed hills.
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North America during the Late Cretaceous ~75 million years ago. The Western Interior Seaway covered much of the Midwest including lots of prehistoric sea creatures.
Flint Hills of Kansas
Black Hills, South Dakota - home of Mount Rushmore
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The Driftless region of Wisconsin
Broken Kettle Grasslands in the Loess Hills, Iowa - home of 135 bison
Map of North America during the Last Glacial Maximum i.e. farthest extent of ice during the last Ice Age including many areas of the Midwest under ice. Advancing and retreating ice scoured the region, leaving smoothed hills.

North America during the Late Cretaceous ~75 million years ago. The Western Interior Seaway covered much of the Midwest including lots of prehistoric sea creatures.