I walked three miles into the Mount Mc Donald tunnel in BC A few years ago when I was in Canada railfanning.It was A cloudy day so I went into the tunnel to kill time. four trains came well in was in there. The sound was so great it allmost blew out my ear drums.It's A loud thundering seround sound.That tunnel is all lit up as well. Lights all the way through it.It reminded me of walking through A tunnel into time or A tunnel into A other world. You should go into there. It's cool. There's doors in there that lead into rooms and outside. I had A dream on being in A tunnel like this A few years befor I ever been in there.I felt like I was walking into my dream or something. If you go on youtube and type in train ride through the Mount Mc Donald tunnel you'll see what it's like in that tunnel.