| photo made June 16, 2013, and provided by Great Lakes Exploation Group, diver Jim Nowka of Great Lakes Exploration Group inspects a wooden beam extending from the floor of Lake Michigan that experts believe may be part of the Griffin, a ship that sank in 1679. Crews are digging a pit at the base of the beam to see if it's attached to a buried ship.Photo: David J. Ruck, Great Lakes Exploration Grou... |