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  2. De Tour Passage Underwater Preserve - Wikipedia

    en.wikipedia.org/wiki/De_Tour_Passage_Underwater...

    With the discovery of significant hematite mines in northern Minnesota in the late 19th century, and the construction of steel mills from the late 19th century onward in and around Cleveland, Ohio, Detroit, Michigan, and Gary, Indiana, the DeTour Passage became an essential element in one of the most significant commodity supply pipelines of the Great Lakes.

  3. Murray Lake (Michigan) - Wikipedia

    en.wikipedia.org/wiki/Murray_Lake_(Michigan)

    Murray Lake is a naturally formed lake about 7 miles (11 km) away from the town of Lowell, Michigan. Murray Lake is the third largest lake in Kent County, lying in the northeast corner of the county. The lake north of 4 Mile Road is in Grattan Township. South of 4 Mile is Vergennes Township.

  4. St. Clair Tunnel - Wikipedia

    en.wikipedia.org/wiki/St._Clair_Tunnel

    The St. Clair Tunnel is the name for two separate rail tunnels which were built under the St. Clair River between Sarnia, Ontario and Port Huron, Michigan.The original, opened in 1891 and used until it was replaced by a new larger tunnel in 1994, was the first full-size subaqueous tunnel built in North America. [3]

  5. Underground Tours That You Didn't Know Were Right Under ... - AOL

    www.aol.com/underground-tours-didnt-know-were...

    As far as underground caverns go, the Carlsbad Caverns are a must-see — and visitors only have to pay $15 to tour them. Located in Chihuahuan Desert of southern New Mexico, the caverns are in ...

  6. Soo Locks - Wikipedia

    en.wikipedia.org/wiki/Soo_Locks

    The entire canal, including the locks, is owned and maintained by the United States Army Corps of Engineers, which provides free passage. The first iteration of the U.S. Soo Locks was completed in May 1855; it was operated by the state of Michigan until transferred to the U.S. Army in 1881.

  7. ‘Rumored underground tunnel’ in this Michigan home for sale ...

    www.aol.com/rumored-underground-tunnel-michigan...

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  8. List of Underground Railroad sites - Wikipedia

    en.wikipedia.org/wiki/List_of_Underground...

    "Keeping the Flames of Freedom Alive", Underground Railroad Monument in Windsor, Ontario, Canada. Detroit, Michigan is in the background. The Act Against Slavery of 1793 stated that any enslaved person would become free on arrival in Upper Canada. A network of routes led from the United States to Upper and Lower Canada. [1]

  9. 1st public tours of Michigan Central Station: 'Spectacular ...

    www.aol.com/first-public-tours-michigan-central...

    By midafternoon, about 1,800 people had toured the building and that number was expected to grow to about 5,000 by the time the tours ended at 10 p.m., Michigan Central spokesman Dan Austin said.