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China Completes the World’s Longest Highway Tunnel
The first cuts through the while the Seikan Tunnel connects two islands beneath ... The Tianshan Mountains, often called a “geological museum,” stretch for 2.500 kilometers and present ...
Business Insider India2y
Switzerland has completed construction on the world's longest tunnel
making it officially the longest tunnel in the world, surpassing Japan's 14.5-mile Seikan Tunnel. Swiss authorities held a media day inside the tunnel on August 24 to announce that the majority of ...