In this photo taken June 16, 2013, divers inspect a hole being dug beside a wooden beam jutting from the floor of Lake Michigan that an exploration group believes may have been part of the 17th

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In this photo taken June 16, 2013, divers inspect a hole being dug beside a wooden beam jutting from the floor of Lake Michigan that an exploration group believes may have been part of the 17th century ship the Griffin. (AP Photo/Great Lakes Exploration Group, David J. Ruck) less 

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Associated Press
Fri, Jun 21, 2013 1:52 PM EDT