A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods.
The San Francisco Municipal Railway (SF Muni or Muni) is the public transit system for the city and county of San Francisco, California.. In 2006, Muni served 46.7 square miles (121 km 2) with an operating budget of about $700 million.
Synonyms for subway at Thesaurus.com with free online thesaurus, antonyms, and definitions. Find descriptive alternatives for subway.
Clues about a stunning twist in the plot to kill Abraham Lincoln may be hidden in a forgotten subway tunnel
Rochester NY's source for lost history and new ideas. The Rochester Subway may be gone, but these old Rochester photos, maps, images and stories bring back pieces of Rochester history few people know about.
Tunnels and underground excavations: Tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature’s action in dissolving a soluble rock, such as limestone.
Railway Magazine. This is a very long term project, although simpler than some of the other sub-projects as the Railway Magazine is widely available, unlike The Journal of the Institution of Locomotive Engineers which is absurdly rare, or even British Railway …
Picture: The Étoile du Nord Paris-Amsterdam (1927-1995). Almost as fast as the high speed train, but two to three times cheaper.
Note: Most railfans I know are interested in more than just trains. So, I have made an effort to put other things of possible interest to the …