Wisconsin's Plateaus: Driftless Area and Northern Highland

Yes, Wisconsin has two distinct plateau regions:

1. Driftless Area (Southwest): Unglaciated during last Ice Age. Rugged, dissected plateau of Paleozoic sandstone/limestone. Deep valleys, steep ridges, cold-water streams, karst topography (caves, sinkholes). Highest point: West Blue Mound (1,719 ft). Unique ecology (goat prairies, endemic snails).
2. Northern Highland (North): Glaciated, gently rolling plateau of Precambrian bedrock (Canadian Shield). 1,500+ kettle lakes, dense forests (Northwoods), sandy soils. Elevation 1,500–1,900 ft. Highest: Timms Hill (1,951 ft) — state high point. Headwaters of Wisconsin, Wolf, Flambeau rivers.

Central Plain (former Glacial Lake Wisconsin) and Eastern Ridges/Lowlands separate them. The Driftless is a national geologic treasure; the Northern Highland is Wisconsin's "cabin country."