Historic floods during the summer of 1993 poured over the emergency spillway at Coralville Lake and eroded a deep channel into the underlying bedrock deposits. It is now possible to walk across acres of Devonian-age sea floors and get a first-hand look at features normally hidden from view or glimpsed only in vertical cuts along roadsides or in quarries. The exposed rocks provide a rare opportunity for public observation of Iowa's past.
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Wednesday, December 12, 2012
Devonian Fossil Gorge
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