The subfreezing temps caused issues with one of the P42's so the Union Pacific added an engine up front to take the Zephyr through the Colorado Rockies.
Emerging from the bore in Bootlegger Canyon, the Potash Local rolls past the Corona Arch and its cathedral-like accompaniment of impressive rock formations on a sweltering Utah morning.
Nearing its destination, UP's Potash Local trundles along the Cane Creek Branch under the imposing yet intricate geological formations along the Colorado River near Moab.
A pair of SD70Ms roll southbound in the intense mid-day heat tackling one of the grades on the Cane Creek Branch on their way to work Intrepid Potash before returning to Grand Junction. A sharp ey... (more)