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  2. Underground city - Wikipedia

    en.wikipedia.org/wiki/Underground_city

    Oklahoma City, Oklahoma: the Oklahoma City Underground (formerly the Oklahoma City Conncourse) is a tunnel system connecting nearly all of the downtown buildings in a 20-square-block area. It is one of the most extensive all-enclosed pedestrian systems in the U.S., extending three-quarters of a mile and connecting over 30 downtown buildings via ...

  3. List of tunnels in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_tunnels_in_the...

    Other tunnels in New York State: New York City water supply system tunnels 1 and 2; New York City Water Tunnel No. 3; Otisville Tunnel on Erie Railroad, Otisville, Orange County [35] Shandaken Tunnel, New York City water supply system, between Schoharie Reservoir and Esopus Creek; State Line Tunnel, Canaan, on the Boston and Albany main rail line.

  4. Houston tunnel system - Wikipedia

    en.wikipedia.org/wiki/Houston_tunnel_system

    A tunnel in the west part of the downtown loop. The Houston tunnel system is a network of subterranean, climate-controlled, pedestrian walkways that links 95 full city blocks 20 feet (6 m) below Houston's downtown streets. It is approximately six miles (9.7 km) long. [1] There are similar systems in Chicago, Dallas, Oklahoma City, Montreal, and ...

  5. Derinkuyu underground city - Wikipedia

    en.wikipedia.org/wiki/Derinkuyu_underground_city

    The city at Derinkuyu was fully formed in the Byzantine era, when it was heavily used as protection from Arab Muslims during the Arab–Byzantine wars (780–1180 AD). [ 8 ] [ 9 ] [ d ] The city was connected with another underground city, Kaymakli , through 8–9 km (5.0–5.6 mi) of tunnels. [ 10 ]

  6. Disney utilidor system - Wikipedia

    en.wikipedia.org/wiki/Disney_utilidor_system

    The utilidors have been referred to as an "underground city", the functions of which include: [5] Waste removal: The Magic Kingdom uses an automated vacuum collection (AVAC) system for waste removal. Custodians remove trash from the park twenty-four hours a day, then dump it into AVAC system processors throughout the park.

  7. Tunnel network - Wikipedia

    en.wikipedia.org/wiki/Tunnel_network

    In transport, tunnels can be connected together to form a tunnel network.These can be used in mining to reach ore below ground, in cities for underground rapid transit systems, in sewer systems, in warfare to avoid enemy detection or attacks, as maintenance access routes beneath sites with high ground-traffic such as airports and amusement parks, or to extend public living areas or commercial ...

  8. Elon Musk’s underground transit system in Las Vegas is a ...

    www.aol.com/finance/elon-musk-underground...

    The tunnel system is a far cry from the ... Musk had envisioned sci-fi systems for cities worldwide that would shoot pods carrying passengers through underground tubes at hundreds of miles per ...

  9. Subterranean New York City - Wikipedia

    en.wikipedia.org/wiki/Subterranean_New_York_City

    Graffiti in tunnel. The underground world of New York City has been the subject of TV series, films, paintings and books. In the popular fictional TV series Teenage Mutant Ninja Turtles, the sewer system was the turtles' home and their means of navigating swiftly underneath the sprawling city above.