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69-542: It is one of four connecting bike trails in west-central Wisconsin that spans approximately one-third of the state. The trail is known for the rural scenery and terrain of the Coulee Region . It is part of the larger Wisconsin bike trail system , operated by the state of Wisconsin. The four connecting west central Wisconsin trails, known as the Bike 4 Trails , going from southeast to northwest are: The western end of

138-551: A contentious political battleground region of Wisconsin in the past decade. Divided almost evenly between Republicans and Democrats, the area has bucked national trends by remaining relatively liberal despite a widespread shift in rural areas toward the Republican Party. But Republicans have steadily made gains in the area, with Trump winning the area in both the 2016 and 2020 presidential elections. Democrats have won some House, gubernatorial, and State Supreme Court races in

207-437: A place where even a pond can naturally form. There are also very few dams in that the valley walls and floors are very often fissured or crumbly, or very porous, providing very poor anchors for a dam or making it difficult to keep any kind of reservoir appropriately filled. There are no real waterfalls , but some very strong springs bear the name. A modern, man-made characteristic is the comparatively twisty nature of highways in

276-629: A presence at Fort McCoy in Monroe County between Sparta and Tomah , immediately south of the Black River State Forest . The property is used mainly for military training exercises, although troops have also been based there for deployments overseas. The Coulee Region portion of the Driftless Area comprises much of Wisconsin's Western Upland geographical region. The most rugged part of Wisconsin's Driftless area

345-630: A stream to its confluence with the main-stem Mississippi can reach well past 650 feet (200 m) in only a few miles. The Waukon Municipal Airport is reliably established as being 1,281 feet (390 m) above sea level. The Army Corps of Engineers maintains a river level in Pool 9 of about 619 feet (189 m) above sea level, which covers Lansing . Maps and signs issued by the Iowa Department of Transportation indicate Waukon and Lansing are 17 miles (27 km) apart on Iowa Highway 9 . This

414-613: A substantial diversion of water from the Great Lakes Basin and the Saint Lawrence River, reducing the inflow of fresh water into the North Atlantic with possible impacts to ocean currents and climate . The Mississippi River trench is one of the few places in the Driftless Area where the bedrock is very deep below the surface, and is overlaid by large amounts of sediment. As home to the formation of

483-595: A substantial portion of the gorge of the Upper Mississippi, this enormous quantity of sediment goes down at least 300 feet (91 m) under the present riverbottom at the confluence of the Wisconsin River . In contrast, as the Mississippi exits the Driftless Area "between Fulton and Muscatine , [... ( Pool 13 )], it flows over or near bedrock." "The course of the upper Mississippi River along

552-654: A wide variety of deposits, e.g. loess , glacial till, river deposits, colluvium , and so forth, of Quaternary age. However, this term is most commonly used to specifically describe glacial deposits. In 1839, geologist Roderick Murchison introduced the term drift to describe unconsolidated surficial sediments previously called diluvium . The term drift refers to the drift hypothesis proposed by Charles Lyell , as influenced by contemporary polar research, that these sediments had been transported by sea ice and icebergs drifting in marine currents. The drift hypothesis further proposed that these sediments had been released as

621-570: Is Richard J. Dorer Memorial Hardwood State Forest , which contains some state-owned land, but is mostly private, controlled by state conservation easements. Around 85% of the Driftless Area lies within Wisconsin, comprising much of the southwestern quarter of the state. The border is defined by the catchment of the Chippewa River on the north, and somewhat west (or east, depending on if the southwestern portion of Wisconsin's Central Plain

690-606: Is 13 feet but was recorded as high as 23 feet during the 2018 flood which was declared a statewide emergency. Many community members were rescued by boats sent by the Wisconsin Department of Natural Resources . Days later, when two dams in Ontario, Wisconsin broke, it produced flood water downstream in Readstown, Wisconsin , Soldiers Grove, Wisconsin , and Gays Mills, Wisconsin . The history of this portion of

759-476: Is a drop of more than 660 feet (200 m) in less than 20 miles (32 km) (and this along a very minor tributary of the Mississippi). "The role of isostatic rebound on the process of stream incision in the area is not clearly understood." There are many small towns in the Driftless Area, especially in river valleys, at or upstream from the Mississippi. Small towns in a deep steep valley going down to

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828-454: Is a multi-agency cooperative effort to restore the landscape. The main issues are water pollution from agricultural and animal runoff, and erosion. Many farmers in the region utilize contour plowing , strip cropping , and other agricultural practices to reduce soil erosion due to the hilly terrain. Water pollution is critical in karsted regions such as this, in that it can degrade or destroy prime cold water fish habitat. Soil erosion presents

897-622: Is a topographical and cultural region in the Midwestern United States that comprises southwestern Wisconsin , southeastern Minnesota , northeastern Iowa , and the extreme northwestern corner of Illinois . The Driftless Area is a USDA Level III Ecoregion: Ecoregion 52 . The Driftless Area takes up a large portion of the Upper Midwest forest–savanna transition . The eastern section of the Driftless Area in Minnesota

966-469: Is also called the Ocooch Mountains . Largely rural in character, land cover is forest, farmland, and grassland/pasture; modest wetlands are found in river valleys, and along the Mississippi. Row crop farming is less encountered than elsewhere in the state. Away from the Mississippi, Wisconsin, and other major rivers, much of the terrain is gently rolling, supporting dairy farms. In other areas,

1035-548: Is also interested. The Driftless Area contains more than half of the world's algific talus slopes , a type of small, isolated ecosystem. These refugia create cool summer and fall microclimates which host species usually found further north. They contain at least one endangered species , the Iowa Pleistocene Snail , and a threatened plant, the Northern monkshood . The Driftless Area National Wildlife Refuge

1104-617: Is called the Blufflands , due to the steep bluffs and cliffs around the river valleys. The western half is known as the Rochester Plateau, which is flatter than the Blufflands. The Coulee Region is the southwestern part of the Driftless Area in Wisconsin. It is named for its numerous ravines. Never covered by ice during the last ice age , the area lacks the characteristic glacial deposits known as drift . Its landscape

1173-490: Is characterized "by the absence of glacial drift deposits, the sculpted topography, and the presence of the ancient limestone immediately beneath the soil and in cliff outcroppings." The Minnesota Driftless Area did not reach the Twin Cities or any areas to the north or west of them; rather, the Twin Cities marked the edge of glaciation, with substantial terminal moraines overlying the region. The largest protected area

1242-476: Is characterized by steep hills, forested ridges, deeply carved river valleys, and karst geology with spring-fed waterfalls and cold-water trout streams. Ecologically, the Driftless Area's flora and fauna are more closely related to those of the Great Lakes region and New England than those of the broader Midwest and central Plains regions. The steep riverine landscape of both the Driftless Area proper and

1311-601: Is included) of the north-south line of the Wisconsin River . Where the Wisconsin River turns west to join the Mississippi, the area to the south, including the whole of Grant County as well as most of Lafayette County , are part of the Driftless Area. The rugged terrain comprising most of the Driftless Area is distinct from the rest of Wisconsin, and is known locally as the Coulee Region. The steep ridges, numerous rock outcroppings, and deep, narrow valleys in

1380-471: Is located in a historic depot in Sparta and is open from May 1 through October 31. There is a $ 5.00 per day fee for use of the trail if one does not have the $ 25.00 yearly Wisconsin bike trail pass. Camping, lodging, food, parking, bike rentals and information are available at many points along the trail. The trail is constructed upon the abandoned Chicago and North Western Railway railroad bed. It originally

1449-583: Is made from unpasteurized milk. Organic dairy generally fits best with a grass-based milk production system. The bioregion's economic and cultural characteristics were federally recognized with the granting of the Upper Mississippi River Valley (UMRV) viticultural area, the largest designated winemaking region in the country, by the Treasury Division's Tax and Trade Bureau in 2009. The petition for designation maintains

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1518-439: Is the rising of fishflies , a kind of mayfly endemic to the Mississippi valley in the region. These are aquatic insects attracted to light, which rise by the millions as adults to mate, only to die within hours. Wildlife is abundant with opportunities for hunting whitetail deer and wild turkey . Fishing, particularly for brown trout , brook trout , and rainbow trout in tributaries, and species such as channel catfish in

1587-652: The Army Corps of Engineers with a problem that requires them to dredge the Mississippi River shipping channels to keep them open. Trout Unlimited is part of this effort, if only because of the superb cold-water streams the region supports. A symposium was held in October 2007 in Decorah, Iowa , "to share the results of research, management and monitoring work in the Driftless Area." The Nature Conservancy

1656-477: The Boaz mastodon , a composite skeleton of two separate mastodons found in the 1890s in southwestern Wisconsin . Although evidence exists that mastodons inhabited mostly coniferous spruce forests associated with the taiga biome , it is likely that most or all of the Driftless Area was at times covered by tundra and permafrost during periods of glacial maximums . The Midwest Driftless Area Restoration Effort

1725-605: The Door Peninsula . The hypothesis posits that the flow of the ancient Wyalusing River was ultimately captured by the ancestral Mississippi River to the south when that river eroded through the Military Ridge near Wyalusing State Park , possibly as a result of an ancient ice sheet in a previous continental glaciation blocking the Wyalusing River to the east. The resulting proglacial lake would have filled

1794-596: The University of Wisconsin-Madison Center for Integrated Agricultural Systems, is a coalition of sustainable-agriculture farmers, processors, distributors, chefs, planning commissions, and other participants. The project seeks to define the culinary identity of the region and further direct the development of agritourism . Fine-grained silica sand is typical of the Driftless and is mined for use primarily in hydraulic fracturing , commonly known as "fracking". Due to

1863-605: The Upper Mississippi River dates back to an origin "as an ice-marginal stream during what had been referred to as the ' Nebraskan glaciation .'" This is an outdated and abandoned period in the Pre-Illinoian Stage . The level of erosion often exposes Cambrian limestone of about 510 million years of age. Evidence from soil borings and recent lidar imagery in the lower Wisconsin River valley in

1932-885: The Wisconsin Glaciation involved several major lobes of the Laurentide Ice Sheet: the Des Moines lobe, which flowed down toward Des Moines on the west; the Superior lobe and its sublobes on the north; and the Green Bay lobe and Lake Michigan lobes on the east. The northern and eastern lobes were in part diverted around the area by the Watersmeet Dome, an ancient uplifted area of Cambrian rock underlain by basalt in northern Wisconsin and western upper Michigan . The southward movement of

2001-548: The 2020s. Corresponding to the southeast geological region of Minnesota , the colloquial "Driftless Area" (though the whole region was glaciated) begins at about Fort Snelling . Starting as a narrow sliver against the Mississippi, it widens to the west as one goes south. The western boundary is the Bemis-Altamont moraine. Another more easily located reference to the western boundary is the approximate line of Minnesota State Highway 56 . The upland plateau lies west of

2070-622: The Driftless Area are in marked contrast with the rest of the state, where glaciers have modified the landscape. The hilly unglaciated landscape is well represented in Wisconsin's Coulee Experimental State Forest , Wildcat Mountain State Park , Governor Dodge State Park , Perrot State Park , and the Kickapoo Valley Reserve. Karst topography is most prominent in Wisconsin. Eagle Cave in Blue River, WI and Cave of

2139-470: The Driftless area suggests that the river in the valley once flowed eastward, rather than its existing westerly course toward its confluence with the Mississippi River. This has led to the hypothesis that the ancient Upper Mississippi River (also named the Wyalusing River) at one time flowed east through the Wisconsin River valley and into the Great Lakes / Saint Laurence River system somewhere near

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2208-644: The Driftless area was covered by or bordered by Glacial Lake Wisconsin during the Wisconsin glaciation . The steep-sided rocky bluffs present in Roche-a-Cri State Park and Mill Bluff State Park are Cambrian outliers of the Franconia cuesta to the southwest and were once islands or sea stacks in the ancient lake. The flat plain in which these bluffs lie is located in the southwest portion of Wisconsin's Central Plain geographic region, and

2277-691: The Mississippi are at risk every 50 to 100 years or so of a major flood, as with the wreck of Gays Mills, Wisconsin , in August 2007, or the holding of the levee in Houston, Minnesota , (on the South Fork Root River ) at the same time. Metropolitan areas have flood walls ( See 2007 Midwest flooding ). In August 2018, the region yet again experienced record-breaking flooding in valley towns such as Coon Valley, Wisconsin , La Farge, Wisconsin and Viola, Wisconsin . The Kickapoo River flood stage

2346-468: The Mississippi is available, with ice fishing in winter. The Driftless Area is part of the Mississippi Flyway . Many birds fly over the river in large flocks, going north in spring and south in autumn. There are very few natural lakes in the region, these being found in adjoining areas of glacial till, drift, and in moraines; the region is extraordinarily well drained, and there is rarely

2415-452: The Mounds , near Blue Mounds, WI , are better known examples. The Driftless Area is located in all or part of Pierce , Pepin , Eau Claire , Buffalo , Trempealeau , Jackson , La Crosse , Monroe , Juneau , Vernon , Richland , Sauk , Crawford , Iowa , Dane , Green , Grant , and Lafayette counties. If the less restrictive definition of the Driftless Area is used (which includes

2484-588: The Wisconsin River were carved through the bedrock during the sudden draining of Glacial Lake Wisconsin at the end of the last ice age . Drift (geology) In geology, drift is a name for all sediment ( clay , silt , sand , gravel , boulders ) transported by a glacier and deposited directly by or from the ice, or by glacial meltwater . Drift is often subdivided into (unsorted and) unstratified drift (glacial till ) that forms moraines and stratified drift (glaciolacustrine and fluvioglacial sediments) that accumulates as stratified and sorted sediments in

2553-721: The Wisconsin River, which drained Glacial Lake Wisconsin , and Glacial River Warren (whose bed is occupied by the Minnesota River ), which drained the colossal Glacial Lake Agassiz . There was ample water to dig a very deep, hundreds-of-miles-long gash into the North American bedrock where the Upper Mississippi River now flows. The climate is humid continental , displaying both the cool summer and warm summer subtypes as one travels from north to south. The United States Department of Agriculture has

2622-599: The Wyalusing River valley until it overtopped the Military Ridge, ultimately carving through the ridge and draining the lake. This resulted in the ancient Upper Mississippi River changing course and flowing south toward the Gulf of Mexico , instead of east into the Saint Lawrence River and the North Atlantic Ocean . The stream capture hypothesis for the Upper Mississippi River would have produced

2691-459: The area, as it was the outlet for Glacial Lake Duluth , forerunner to Lake Superior , when the eastern outlet was blocked by the continental ice sheet. All major rivers in and adjacent to the Driftless Area have deep, dramatic canyons giving testimony to the immense quantity of water which once surged through them as a result of the nearby melting Glaciers associated with the miles-high Ice sheets during recurring Ice ages . Other examples include

2760-775: The continental glacier was also hindered by the great depths of the Lake Superior basin and the adjacent highlands of the Bayfield Peninsula , Gogebic Range , Porcupine Mountains , Keweenaw Peninsula , and the Huron Mountains along the north rim of the Superior Upland bordering Lake Superior. The Green Bay and Lake Michigan lobes were also partially blocked by the bedrock of the Door Peninsula , which presently separates Green Bay from Lake Michigan . Another factor that may have contributed to

2829-479: The deposition of loess. The sedimentary rocks of the valley walls date to the Paleozoic Era and are often covered with colluvium or loess. Bedrock , where not directly exposed, is very near the surface and is composed of "primarily Ordovician dolomite , limestone , and sandstone in Minnesota, with Cambrian sandstone, shale , and dolomite exposed along the valley walls of the Mississippi River." In

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2898-445: The earth through fractured bedrock or a sinkhole, either joining an aquifer , or becoming an underground stream. Blind valleys are formed by disappearing streams and lack an outlet to any other stream. Sinkholes result from the collapse of a cave's roof, and surface water can flow directly into them. Disappearing streams can re-emerge as large, cold springs. Cold streams with cold springs as their sources are superb trout habitat. Due to

2967-634: The east, the Baraboo Range , an ancient, profoundly eroded monadnock in south central Wisconsin , consists primarily of Precambrian quartzite and rhyolite . The area has not undergone much tectonic action, as all the visible layers of sedimentary rock are approximately horizontal. Karst topography is found throughout the Driftless area. This is characterized by caves and cave systems, disappearing streams , blind valleys , underground streams , sinkholes , springs , and cold streams. Disappearing streams occur where surface waters sink down into

3036-554: The form of outwash plains , eskers , kames , varves , and so forth. The term drift clay is a synonym for boulder clay . Both are archaic terms for glacial tills with a fine-grained matrix. In the United Kingdom, drift is also applied as a general term for all surficial, unconsolidated, rock debris and sediment that is moved from one place to accumulate in another and mapped separately or otherwise differentiated from underlying bedrock . In this usage, drift includes

3105-576: The incised tributaries to the Mississippi. The historic vegetation was mixed woodland, with occasional goat prairies on southwesterly facing slopes. In the western section is "an old plateau covered by loess [...] along the eastern border and pre-Wisconsin age glacial till in the central and western parts. The western portion is a gently rolling glacial till plain that is covered by loess in places." The counties involved include all or part of Dakota , Goodhue , Rice , Wabasha , Winona , Olmsted , Dodge , Houston , Fillmore , and Mower . Aside from

3174-480: The lack of glaciation of the Driftless area is the fractured, permeable bedrock within the Paleozoic Plateau underlying it, which would have promoted below-ground drainage of subglacial water that would otherwise have lubricated the underside of the glacial ice sheet. The dewatering of the underside of the ice sheet would have inhibited forward movement of the glacier into the Driftless Area, especially from

3243-401: The landscape. Prairies also occurred on steep slopes with south or southwest aspect ( see goat prairie ). Natural fire, which has long been vigorously suppressed, was essential for the regeneration of such prairies. Evidence of ancient extinct ice age animals that once inhabited the Driftless Area has been discovered over the years. An example of extinct Pleistocene megafauna in the area is

3312-490: The margin of the Driftless Area of southeastern Minnesota is believed to have been established during pre-Wisconsin time, when a glacial advance from the west displaced the river eastward from central Iowa to its present position." Other rivers affected by this geologic process are: Although lying just to the north of the Driftless Area, the Saint Croix in Wisconsin and Minnesota is another important river that affected

3381-436: The paleozoic plateau, following the original drainage patterns. Overall, the region is characterized by an eroded plateau , with bedrock overlain by varying thicknesses of loess . Most characteristically, the branching river valleys are deeply dissected. The bluffs lining this reach of the Mississippi River climb to nearly 600 feet (180 m). In Minnesota, pre-Illinoian-age till was probably removed by natural means prior to

3450-466: The position that the region is a cohesive whole for marketing wine, and is now used to market other products. In addition to wine-grape production and wine-making, the region, especially in southeast Minnesota, is known for apple, maple syrup, and honey production. Tobacco was also once a key crop of the Driftless, as its topography and sandy, nutrient-rich soil are suitable for its growth. The Driftless Region Food and Farm Project, in partnership with

3519-402: The presence of sandstone bedrock at or near the surface, sand mining is an industrial activity in the Driftless, with Wisconsin at the forefront of the industry. The sandstone contains quartz (silica) sand grains of the ideal hardness, shape, and size, which make it optimal for use in hydraulic fracturing by the petroleum and natural gas industries. The mining activity involves quarrying

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3588-517: The prominence of industry has raised concerns about impacts on water quality, air pollution caused by silica dust, noise and light pollution , heavy truck traffic, and the destruction of hills and ridges for which the region is known. Recently , industry changes have caused companies such as Hi-Crush, Covia , Superior Silica Sands— all with operations in Wisconsin—to liquidate their frac sand mines and declare bankruptcy. The Driftless Area has become

3657-520: The rapid movement of underground water through regions with karst topography, groundwater contamination is a major concern in the Driftless area. The Mississippi River passes through the Driftless Area between and including Pool 2 and Pool 13 . As rivers and streams approach their confluence with the Mississippi, their canyons grow progressively steeper and deeper, particularly in the last 25 miles (40 km) in their journey to their mouths. The change in elevation above sea level from ridgetops lining

3726-422: The region falling mainly in zone 5a , with the northern fringe being 4b. A few patches in Wisconsin are 4a. Prior to European settlement in the 19th century, the vegetation consisted of tallgrass prairie and bur oak savanna on ridgetops and dry upper slopes, sugar maple - basswood - oak forest on moister slopes, sugar maple-basswood forests in protected valleys and on north-facing slopes, wet prairies along

3795-529: The region has generated much public interest in the organic and artisanal food market. Organic dairy and beef production is of particular economic significance to the Driftless. Organic Valley , the largest organic dairy cooperative in the United States, was founded and is headquartered in La Farge, Wisconsin. The region's cheese production boasts specialty cheeses such as raw-milk artisan cheese, which

3864-514: The region, much of the incised Paleozoic Plateau of Wisconsin and northwestern Illinois has no evidence of glaciation. Numerous glacial advances throughout the world occurred during the most recent Quaternary glaciation (also known as the Pleistocene glaciation). The Upper Midwest and Great Lakes region of North America was repeatedly covered by advancing and retreating glaciers throughout this period. The Driftless Area escaped much of

3933-601: The region, such as in Kentucky , in contrast to the usually rigid east-west/north-south alignment elsewhere in the Midwest. Here, the roads switchback up stream valleys or travel over ridge tops. The route of U.S. Highway 20 through the Driftless, and particularly in Illinois, is a good example. The natural characteristics of the Driftless Area provide good conditions for growing crops and grazing livestock. In recent years,

4002-460: The rivers, and some mesic prairie on the floodplain farther back from the river. There were probably also oak forests that contained no sugar maple. Marsh and floodplain forests were also common on river flood plains. Prairie was restricted primarily to the broader ridge tops, which were unfavorable sites for trees due to thin soils and shallow bedrock, rapid drainage, and desiccating winds; all these conditions were also good for carrying fires across

4071-401: The rugged nature of the topography in the region is not conducive to farming, except on ridge tops and in river valleys. The sides of the ridges are often too steep for farming, and are usually forested. The Coulee Experimental State Forest near La Crosse was created in part to test soil conservation practices to prevent soil erosion in the hilly Driftless Area. The northeastern portion of

4140-432: The sandstone bedrock by blasting with dynamite , crushing the rock, washing, drying, and grading the resulting sand, and transporting the sand out of the region via barge or train. In 2017, there were 73 frac sand mines in operation in Wisconsin alone, and there are currently five operating industrial sand mines in Minnesota; the proliferation of sand mines in the region created new jobs and generated economic activity. But

4209-541: The scouring and depositional action by the continental glaciers that occurred during the last ice age, which produced significant differences in the topography and drainage patterns within the unglaciated area compared to adjacent glaciated regions. The region has been subjected to large floods from the melting Laurentide Ice Sheet and subsequent catastrophic discharges from its proglacial lakes , such as Glacial Lake Wisconsin , Glacial Lake Agassiz , Glacial Lake Grantsburg , and Glacial Lake Duluth . The last phases of

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4278-698: The southeastern suburban sprawl of the Twin Cities , Rochester is the main urban area. Additional communities include Red Wing , Lake City , Winona , La Crescent , Chatfield , Lanesboro , Rushford , Houston , and Caledonia . Glacial River Warren , in whose bed the Minnesota River now flows, entered the "Driftless Area" just downriver from present-day Minneapolis-Saint Paul , at Fort Snelling , over River Warren Falls , "an impressive 2700 feet (823 m) across and 175 feet (53 m) tall, over 10 times as wide as Niagara falls" (this has since receded to become Saint Anthony Falls ). The region

4347-907: The surrounding Driftless-like region is the result of early glacial advances that forced preglacial rivers that flowed into the Great Lakes southward, causing them to carve a gorge across bedrock cuestas , thereby forming the modern incised upper Mississippi River valley. The region has elevations ranging from 603 to 1,719 feet (184 to 524 m) at Blue Mound State Park , and together with the Driftless-like region, covers 24,000 square miles (62,200 km ). Retreating glaciers leave behind material called drift composed of silt, clay, sand, gravel, and boulders. Glacial drift includes unsorted material called till and layers deposited by meltwater streams called outwash . While drift from early ( pre-Illinoian ) glaciations has been found in some parts of

4416-710: The trail is at the intersection with the Great River Trail at a parking lot off of County Highway B east of [REDACTED] WIS 16 in Onalaska ( 43°51′35″N 91°12′06″W  /  43.85972°N 91.20167°W  / 43.85972; -91.20167 ), while the eastern end is at the intersection with the Elroy-Sparta State Trail on John St. in Sparta ( 43°55′55″N 90°47′50″W  /  43.93194°N 90.79722°W  / 43.93194; -90.79722 ). The trail headquarters

4485-484: The unglaciated southwestern portion of Wisconsin's Central Plain ), then Adams and portions of southern Wood and Portage counties are also included. La Crosse is the principal urban area wholly within the Driftless Area, while the larger Madison 's far western suburbs are located on the edges of the area. Small cities and towns are scattered throughout the region. Numerous Amish settlements are also located within Wisconsin's Driftless Area. The U.S. Army maintains

4554-429: The west. In the adjacent glaciated regions, the glacial retreat left behind drift, which buried all former topographical features. Surface water was forced to carve out new stream beds. This process was absent in the Driftless Area, where the original drainage systems persisted during and after the ice age. Water erosion continued carving the existing gullies , ravines , stream beds, and river valleys ever deeper into

4623-622: Was built for the Baraboo Air Line Railroad and the La Crosse, Trempealeau & Presscott Railroad routes from Sparta to Winona, Minnesota. The trail is not paved, but is smooth, and covered with packed crushed limestone. Coulee Region 43°30′N 91°00′W  /  43.5°N 91°W  / 43.5; -91 The Driftless Area , also known as Bluff Country and the Paleozoic Plateau ,

4692-413: Was formed in part by sediments falling to the bottom of Glacial Lake Wisconsin . This flat plain consists of sandy deposits and contains many bogs that were left over from Glacial Lake Wisconsin. Many of these bogs have been converted into cranberry marshes, helping to make Wisconsin a leader in cranberry production. The remainder of the sand plain consists of forest and irrigated farmland. The Dells of

4761-530: Was primarily carved out of the Upper Mississippi River National Wildlife and Fish Refuge in order to protect these species and their associated ecosystems. Isolated relic stands of pines and associated northern vegetation are found in some locations where algific talus slopes exist. These trees survive in the cooler microclimate produced at these locations outside of their range further north. A noteworthy annual event

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