This important waterway made travel possible from the east coast to the interior of our country in years past, and today provides a beautiful scenic area for boaters and visitors of all types. The mighty Mackinaw Bridge depicted on this map now spans the straits making travel more efficient today. The map is framed in solid sassafras wood, carved into Baltic Birch and covered with acrylic to protect. Accurate satellite depths are shown in the waterways, and cities, towns and lake are carved into the land area. Measures 31"w x 25"h.