The world’s longest and deepest undersea road tunnel is being built in Norway, intended to cut travel time between major cities and become part of a ferry-free highway along its western coast.

Beneath the idyllic resort towns of Mexico 's Yucatan Peninsula, daring explorers have uncovered a hidden world of grand ...

Driving into an underwater tunnel can catch you off guard. One moment you’re in open daylight, and then the road dips and you ...

The Ox Bel Ha cave system under Mexico's Yucatan Peninsula is a complex network of chambers and tunnels filled with ice ...

In 2018, Ox Bel Ha was temporarily surpassed as the longest explored underwater cave after a connection was discovered ...

Norway is building the Rogfast, set to become the world’s longest and deepest underwater road tunnel. The project spans 26.7 ...

Connecting Europe and Africa across the Strait of Gibraltar remains a dream. Engineers have explored bridges and tunnels for ...

A groundbreaking $8.3bn billion project, set to debut in 2029, is poised to become the world's longest underwater rail and road tunnel. The ambitious plan aims to dramatically slash travel time ...

After Galloping Gertie collapsed in 1940, its twisted steel created a thriving underwater world. Now it’s at risk.

The Spanish government has officially commissioned public engineering firm Ineco to design the reconnaissance gallery for the ...

Machines trained in complex mountain data carefully navigate fault lines, fractures, caves and sinkholes to pick the best ...

The body of cave diver Gary Gibson has been recovered from a 'complex' cave system in South Australia following a major recovery operation ...