Utility tunnel
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A utility tunnel, utility corridor, or utilidor is a passage built underground or above ground to carry utility lines such as electricity, steam, water supply pipes, and sewer pipes. Communications ut
This utility tunnel in Prague is equipped with railway tracks for maintenance vehicles
Flin Flon (in Manitoba, Canada) is built on rock, making excavation costly. The utilidor in the foreground carries municipal sewer and water services and protects piping from freezing in the winter.
Stark utility tunnel in Zurich, Switzerland
District heating tunnel beneath the Rhein River in Cologne, Germany
Utility vault
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A utility vault is an underground room providing access to subterranean public utility equipment, such as valves for water or natural gas pipes, or switchgear for electrical or telecommunications equi
Utility tunnel
…Underground city Utility vault Wayfinding (urban or indoor…
An open utility vault. "ELEC" on cover indicates electrical equipment/wires.