As a part of the Driftless Area of Iowa, it has some geologically interesting areas, particularly the high limestone bluffs.
32.
It is located in the Driftless Area of Iowa, a region which escaped being glaciated during the last ice age.
33.
Nodine is located within the Richard J . Dorer Memorial Hardwood State Forest, and the driftless area of southeast Minnesota.
34.
"' Driftless Area National Wildlife Refuge "'is a United States National Wildlife Refuge in northeastern Iowa, southwestern Wisconsin and northwestern Illinois.
35.
They used the natural resources of the Driftless Area in the Kickapoo Valley to provide them with many of their needs.
36.
Geographically, it is part of the Driftless Area, a portion of North America that escaped all three phases of the Wisconsinian Glaciation.
37.
In Wisconsin, they are the product of nearly a half million years of erosion, unmodified by glaciation ( see Driftless Area ).
38.
It lies in the Driftless Area which is characterized by hills and valleys apparently missed by the last glacial advance during the Pleistocene.
39.
Stones were laid in long, thin ledges, evoking the natural way that they were found in the quarry and across the Driftless Area.
40.
Whereas most of the Midwestern United States was blanketed with till, or drift, by three successive ice ages, the Driftless Area remained ice-free.
