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11th Annual Smithsonian Magazine Photo Contest Travel
The Great Lakes research vessel, Blue Heron, heading back to the Duluth harbor after a run on Lake Superior.

The Great Lakes research vessel, Blue Heron, heading back to the Duluth harbor after a run on Lake Superior.

Photo Detail
Date Taken: 10.2011
Date Uploaded: 11.2013
Photo Location: Duluth, Minnesota, United States of America
Camera: NIKON D70
Copyright: © Mark Ryan