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I bet 35.4 miles was a hasty conversion from the "round" figure of 57 kilometers
A tunnel is a passageway through or under an obstruction, like a mountain.
A tunnel is a passageway through or under an obstruction, like a mountain.
The [[world's longest tunnel]] is 33 miles through the [[Swiss Alps]], completed after 6 decades of work in 2010.<ref>[http://www.washingtontimes.com/news/2010/oct/15/joyous-swiss-celebrate-longest-tunnel-breakthrough/ Joyous Swiss celebrate longest tunnel]</ref>
The [[world's longest tunnel]] is 57 kilometers (around 35 miles) through the [[Swiss Alps]], completed after 6 decades of work in 2010.<ref>[http://www.washingtontimes.com/news/2010/oct/15/joyous-swiss-celebrate-longest-tunnel-breakthrough/ Joyous Swiss celebrate longest tunnel]</ref>
==Notes==
==Notes==
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