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deposits destination devonian educational entrance exposing flooding fossil fossils geologic geology gorge history iowa landmark limestone midwest nature old park recreational removed rock scientific sedimentary sign site stone study topsoil tourism travel tree trip usa vegetationSign At Entrance To Devonian Fossil Gorge In Iowa City Iowa, USA Editorial Image
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Sign at Entrance to Devonian Fossil Gorge in Iowa City Iowa, USA #163247602
Description
At the Devonian Fossil Gorge in Iowa City, Iowa, flooding in the 1980s and 1990s removed the topsoil, exposing 375-million-year-old fossils.
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