Railway tunnel construction shortens the route length by allowing rail lines to pass through natural obstacles. These are particularly prevalent when it comes to passages and tunnels through mountains ...
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America's Longest Railroad Tunnel Is A Pacific Northwest Gem Hidden Within Scenic Hiking Trails Near Seattle
Drive 60 miles east from Everett, Washington, on U.S. Highway 2 and you'll reach the treacherous Stevens Pass in the magnificent Cascades. While the mountain road is known for heavy snowfall and ...
Workers drill during construction of the Flathead Tunnel in early June, 1968. (Mel Ruder/Hungry Horse News file photo) Conditions inside the Flathead Tunnel during construction. (Mel Ruder/Hungry ...
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