nice, tunnel 2. us-6, clear creek canyon. I drive through this tunnel 10 times or so, every week. (work in Blackhawk) I was going to take a picture of this one too. have a few good shots from the double yellow in the middle of the road but there was too much traffic when i tried this time... you went to some effort to get this perspective and did a little climbing around. those darn street lights (and minus a power pole or two...) things sure are a lot more green than usual this year! my favorite thus far!
I like the balance between the artificial and natural light. The sky seems odd though. I like how the tunnel is a small part of the image and almost looks like an eye.