This perspective of Big Ten Loop really shows just how impressive the S-Curves are that make up both Little Ten and Big Ten. For those that may be unfamiliar with Big Ten Loop, it was a bit of engineering genius that allowed the Denver, Northwestern, and Pacific to climb the face of the Rockies while keeping to right around 2%. You may note the covered hoppers on the inside of the curve in the foreground. They have been there for nearly 50 years, filled with cement and dirt and serving as a permanent wind break.
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