Tunnels are used to carry traffic through some of the most extreme terrain on the planet and they help ease journeys with reduced travel time. While most tunnels offer a short underground burst of ...

Previously the longest road tunnel in the world, the Gotthard Base Tunnel in Switzerland has slipped down the ranking as new ...

An underwater tunnel, being constructed 400m beneath the sea level, is set to become the world's longest. The colossal 27km (approximately 17 miles) tunnel will connect Randaberg and Bokn in Norway.