- Tunnel - Wikipedia
It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two portals common at each end, though there may be access and ventilation openings at various points along the length
- Tunnels and underground excavations | History, Methods, Uses, Facts . . .
tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature’s action in dissolving a soluble rock, such as limestone A vertical opening is usually called a shaft
- TUNNEL Definition Meaning - Merriam-Webster
The meaning of TUNNEL is a covered passageway; specifically : a horizontal passageway through or under an obstruction How to use tunnel in a sentence
- How Tunnels Work - HowStuffWorks
In this article, we'll explore what makes tunnels such an attractive solution for railways, roadways, public utilities and telecommunications We'll look at the defining characteristics of tunnels and examine how tunnels are built
- TUNNEL | English meaning - Cambridge Dictionary
TUNNEL definition: 1 a long passage under or through the ground, especially one made by people: 2 the long passage… Learn more
- 10 longest tunnels in the world that reshaped global transportation
Explore the world’s 10 longest tunnels, record-breaking engineering marvels that push the limits of design, scale, and human ambition
- TUNNEL Definition Meaning | Dictionary. com
Tunnel definition: an underground passage See examples of TUNNEL used in a sentence
- TUNNEL definition in American English | Collins English Dictionary
A tunnel is a long passage which has been made under the ground, usually through a hill or under the sea Boston drivers love the tunnel
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