City Rail Link, Railway tunnel under Auckland Region, New Zealand.
City Rail Link is a railway tunnel beneath Auckland's center connecting two underground passages. The project cuts through ground at depths reaching about 42 meters (138 feet) and links two major stations together.
Plans to expand Auckland's rail network began in the 1920s. The opening of Britomart Transport Centre in 2003 revived these ideas and eventually led to this major construction project.
The stations bear Māori names that reflect Auckland's local heritage and history. You can see these names displayed at station entrances and signage, showing how indigenous culture shapes the city's identity.
Access to the project is currently restricted as it remains under construction. Visitors can observe the building work from various points around the city where barriers and signs indicate the ongoing operations.
The project uses specialized boring machines to cut through different geological layers beneath the city. These machines must navigate varying soil types, revealing the technical complexity of building underground in an urban setting.
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