Wikipedia
The Driftless Area or Paleozoic Plateau is a region in the American Midwest noted mainly for its deeply carved river valleys. While primarily in southwestern Wisconsin, it includes areas of southeastern Minnesota, northeastern Iowa and extreme northwestern Illinois. The region includes elevations ranging from 603 to 1,719 feet (184 to 524 m) and covers an area of . The region's peculiar terrain is the result of its having escaped glaciation in the last glacial period.It may be termed a geologic province of North America.
Several names for this area are used. Driftless Area is widely used by both federal and state sites and seems to be the common name. Paleozoic Plateau shows up in a number of learned and popular articles and may be on its way to being the preferred name. Coulee Region is primarily a term used in Wisconsin for the greater La Crosse Metropolitan area. Little Switzerland is encountered for the Iowa region of the Driftless Area, particularly for the southern portion of Dubuque County and Swiss Valley Park while areas west of Madison, Wisconsin are occasionally referred to as Little Norway. Driftless Zone, Driftless Region, Driftless Land are also encountered
Usage examples of "driftless area".
This country, for many miles around, was known as the driftless area, a magic little pocket that, for some reason not yet known, had been bypassed by the glaciers while they crunched far south on each side of it.