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Devonian Fossil Gorge - http://www.cs.uiowa.edu/~jones/natural/devonian.html
Devonian Fossil Gorge is the result of the prolonged overflow of the Coralville Reservoir Spillway between July 5 and August 2, 1993. This area is just south of the Coralville Dam (near Iowa City), managed by the Army Corps of Engineers. |