Well, it took a while, but I finally figured out how to build a mountain and tunnel. I'm pleased with the way it turned out. It's based on a design you can see at Caboose Hobbies in Denver. It's a folded figure 8 with a 30 degree crossover.
You can view it here: http://www.youtube.com/watch?v=oak5FUfi5IA
I have made a PowerPoint slide show of the entire process which I've transformed into a PDF which is only 5 MB. Unfortunately, I can't seem to figure out how to link it to this message. If you're interested, let me know and I'll send it to you.
Regards,
David Burrous
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