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 …

Dec 19, 2025 · Tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature’s action in dissolving a soluble rock. Tunnels have many …

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

Apr 7, 2025 · The Federal Government plans to build an underwater tunnel from Ahmadu Bello Way in Victoria Island to Snake Island, connecting the Lagos-Calabar Coastal Highway to the Sokoto …

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

TUNNEL meaning: 1. a long passage under or through the ground, especially one made by people: 2. the long passage…. Learn more.

Nov 25, 2025 · Nigeria is planning construction of Africa’s first underwater tunnel, a project set to dramatically reshape transportation in Lagos State and across the country.