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Interior Low Plateaus

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Interior Low Plateaus

Interior Low Plateaus are a physiographic region part of the larger Interior Plains physiographic province of the Eastern United States. The Interior Low Plateaus consist of a diverse landscape that extends from north Alabama across central Tennessee and Kentucky into southern Illinois, Indiana, and Ohio. The terrain ranges from very steep and rugged to gentle and rolling. The Interior Low Plateaus were never glaciated like the till plains of the midwest further to the north and therefore are not covered in glacial till. Here the sedimentary bedrock is close to the surface and the topography of an area depends on how resistant the underlying bedrock is to erosion. More resistant bedrock result in hillier areas such as the Norman Upland and Crawford Upland in Southern Indiana, while softer rocks have already eroded down to gently rolling plains, like the Scottsburg Lowlands and Wabash Lowlands of southeast and southwest Indiana. The hillier parts of the Interior Low Plateaus are not mountain ranges, but dissected plateaus. Many caves can be found in this region also, including Mammoth Cave in Kentucky and Wyandotte Cave in Indiana.

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