|The western portal of the great Cascade Tunnel
||[May. 25th, 2012|10:53 pm]
At 7.8 miles it's the longest railroad tunnel in the United States, and is still in very active use.
If you ever take Amtrak's popular "Empire Builder" passenger train from Seattle to Chicago, you'll pass through it.
Related YouTube Video: http://www.youtube.com/watch?v=lndpluEe4wk