Tunnel among world's 'deepest' reopens cutting travel between 2 countries to 10 minutes
It lies some 2,480 metres beneath the Aiguille du Midi summit, making it the second deepest operational tunnel in the World operation after Gotthard Base Tunnel in Switzerland.
The Mirror28 天
World's longest and deepest 'mega tunnel' will cost £36bn but cut 21-hour drive in half
Work to construct the world's longest and deepest road tunnel is underway - and it's ... will shave off just 30mi but will save 11 hours by cutting out the need for ferries. The Rogcast will ...