Posted by Joe Pusey on April 18, 2009  I've always wondered what the crossovers in the tunnel looked like, thanks for this rare view! Posted by David Honan on April 18, 2009  Fascinating! Thanks for posting a seldom-seen view of this engineering marvel. Posted by andy parr on April 18, 2009  Great shot,been straight through many times. Posted by Travis Dewitz on April 19, 2009  Very Cool!

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