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Glacial Lake Wisconsin 20,000 years ago with modern counties for geographical context. Glacial Lake Wisconsin was a prehistoric proglacial lake that existed from approximately 18,000 to 14,000 years ago, at the end of the last ice age , in the central part of present-day Wisconsin in the United States .
Autumn in the Driftless Area of Cross Plains, Wisconsin. The Driftless Area, also known as Bluff Country and the Paleozoic Plateau, is a topographic and cultural region in the Midwestern United States [1] that comprises southwestern Wisconsin, southeastern Minnesota, northeastern Iowa, and the extreme northwestern corner of Illinois.
Campbellsport Drumlins State Park: Campbellsport: Drumlins: Scenic drive Chippewa Moraine State Recreation Area: New Auburn: Kettle lakes and ponds, stagnant ice terrain, ice-walled lake plains: Interpretive center, camping, and trails Cross Plains State Park: Cross Plains: Driftless Zone topography, glacial lakes, gorge: Trails Devil's Lake ...
Gloss Mountain State Park and Natural Falls State Park are shining examples of Oklahoma's spectacular and diverse terrain.
The Ice Age Trail is a National Scenic Trail stretching 1,200 miles (1,900 km) in the state of Wisconsin in the United States. [1] [2] The trail is administered by the National Park Service, [3] and is constructed and maintained by private and public agencies including the Ice Age Trail Alliance, a non-profit and member-volunteer based organization with local chapters. [4]
[3]: 40–75 The Early Wisconsin was the bigger of the two and extended farther west and south. It retreated an unknown distance before halting. During this period of quiet, the glacial deposits were eroded and weathered. This first Wisconsin period erased all the Illinoian glacial topography that its glaciers extended over. [3]
However, the Dells itself was never covered by glacial ice sheets – it was part of the large Driftless Area that was bypassed by the ice. The melting of the glacier formed Glacial Lake Wisconsin, a lake about the size of Great Salt Lake in Utah and as deep as 150 feet (45 m). The lake was held back by an ice dam of the remaining glacier.
Till plains are an extensive flat plain of glacial till that forms when a sheet of ice becomes detached from the main body of a glacier and melts in place, depositing the sediments it carried. Ground moraines are formed with melts out of the glacier in irregular heaps, forming rolling hills.