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Places of Geologic Significance
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A category in which to place interesting rock, sand, soil formations and deformations which have been created by natural (not human) forces.
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Places of Geologic SignificanceSioux Falls - Sioux Falls, SD

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The Sioux Falls were formed about 14,000 years ago when the last glacial ice sheet changed the flow of the river into the beautiful falls that we see today.

posted by: Groundspeak Regular Member Hikenutty

location: South Dakota

date approved: 7/23/2007

last visited: 7/8/2019

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