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Crater confirmed underneath Decorah

Crater confirmed underneath Decorah

March 11, 2013 at 1:08 pm

A crater has been discovered under Decorah. Aerial surveys conducted by the U.S. Geological Survey in collaboration with the Iowa and Minnesota Geological Surveys provided evidence of an ancient meteorite impact, said to have occurred 470 million years ago.   

Watch the KWWL news report.

Read the full release from the U.S. Geological Survey.