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Mima Mounds

Organic or Biological Weathering Gallery

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Mima ("meema") mounds, also called pimple mounds, are a few meters across and form large fields in states west of the Mississippi. They appear to be built by gophers, in an adaptation that keeps their burrows above high water tables.
Mima or pimple mounds

Mima mound field, Washington

Washington State Department of Natural Resources photo

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