Bound for Wisconsin Power & Light's power plant in Columbia, Wisc., a SD70MAC/ACe duo slave through the southern portion of Theodore Roosevelt National Park and approach the small tourist community of Medora, ND on a hot Summer afternoon.
In just a few miles, they'll be lucky to be breaking the teens in speed while slugging their 16,619 tons of black diamonds up the near-constant 1.0% grade of Fryburg Hill; even with the assistance of a single manned SD70MAC pushing against the DPU on the rear.
