Reply to "Full Scale Helix? Model?"

I believe that there was a large loop in New Mexico that was the original route of the Sunset Limited, where the UP connected to the T & P, or close to it. The train didn't pass over itself, but used a large spiral to handle the elevation changes. Using Google satellite, you can still see the old route. It's been a few years since I researched it and can't find my files. perhaps approaching El Paso, near Deming or a little further west.