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 …

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 …

The meaning of TUNNEL is a covered passageway; specifically : a horizontal passageway through or under an obstruction. How to use tunnel in a sentence.

Feb 19, 2026 · The Hudson Tunnel Project aims to build a commuter rail tunnel connecting Manhattan and New Jersey.

2 days ago · Gateway Tunnel construction resumes this week, but officials cautioned contracts to built the actual tunnel won't be awarded without funding guarantees.

Constructing a tunnel is one of the most complex challenges in the field of civil engineering. Learn about the basics behind tunnels.

TUNNEL definition: an underground passage. See examples of tunnel used in a sentence.

Define tunnel. tunnel synonyms, tunnel pronunciation, tunnel translation, English dictionary definition of tunnel. n. 1. An underground or underwater passage. 2. A passage through or under a barrier …

Tunnels are counterfeit submerged burrows that are worked without harming the outer layer of the earth. The passages are submerged paths utilized for the most part for transport purposes. They …

A tunnel is an underground structure which is constructed through the surrounding mass of soil or rock. Typically, a tunnel’s length is much greater than its width. Tunnels are designed to …