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Interested in how engineers dig tunnels under big cities? Here you will learn more about the engineering marvels involved the construction of the Central Artery/Tunnel Project, one of the most complex tunnel projects of all time.
The Port Authority of New York and New Jersey provides a detailed history of the construction of the Holland Tunnel, including photographs, facts, and a helpful timeline.
Get the facts on the Hoosac Tunnel, check out cool pictures, and read up on the ghostly legends surrounding the old tunnel.
Ever wonder how water arrives at your sink? Get the facts on New York City's Third Water Tunnel -- one of the largest and most complex tunnel construction projects in the world.
Interested in the canal age of tunneling? The National Park Service provides a wealth of information about the Chesapeake and Ohio Canal -- the historic canal that runs through the Paw Paw Tunnel.
Visit the official site of the Seikan Tunnel for a detailed illustration, facts, and a short history of the longest railway tunnel in the world.
This virtual museum uncovers the story of 200 years of London and its underground transport system, the oldest in the world.
Interested in finding out where the newest tunnels are being built around the world? Get weekly updates on tunnel construction all over the globe.
Includes an extensive list of links to the world's longest roadway, railway, and underwater tunnels
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