How Was The World Longest Tunnel Was Constructed.

IF YOU want to see impressive mountains , come to western Norway! You will be awestruck! In addition, the narrow, winding roads and the many tunnels attest to man’s ingenuity. Recently a new tunnel was completed—a feat of engineering that surpasses any of its kind. It is the Laerdal Tunnel, the world’s longest road tunnel—a highway 15.2 miles [24.5 km] long, bored through solid rock! Imagine driving into the mouth of the tunnel, knowing that after just a few minutes, there will be more than 3,000 feet [1,000 m]of mountain overhead! Why was such…

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