Silent sentinels: Railroad pole and code lines are getting more rare, but Union Pacific's right-of-way up Peru Hill west of Green River, Wyoming still has the silent sentinels lining the way, as s... (more)

Unit train sunrise: An eastbound unit potash train rolls toward Green River, Wyoming, over the Union Pacific on March 13, 2012.

The noisier end of a Union Pacific GE AC4400CW cast a distinct shadow in the late winter sun at Green River, Wyoming, on March 19, 2009.

Two trains meet on barren Peru hill on a bitter cold February afternoon. 7701 leads a westbound intermodal train while UP 8072 disappears as a rear DPU on an eastbound string of covered hoppers. T... (more)

A unit oil train is framed through the empty window of an abandoned Sinclair gas station along old U.S. 30 through James Town near Green River, Wyoming, on the afternoon of March 12, 2012. Sunset ... (more)

An eastbound grain train finishes traversing a long tangent on Peru Hill west of Green River, Wyoming on March 13, 2012. The lead two locomotives can be seen in the shadows of the rugged terrain, ... (more)

As seen from inside a long-abandoned gas station along the old Lincoln Highway (later, U.S. Highway 30) at James Town (west of Green River), Wyoming, a Union Pacific unit soda ash train ascends Pe... (more)

Two sets of Union Pacific EMD SD40-2s rest on the night of January 19, 2013 at Green River, Wyoming. These older 3,000 h.p. locomotives are used for switching the yard here, while three bigger GE ... (more)

As seen from inside a long-abandoned gas station along the old Lincoln Highway (later, U.S. Highway 30) at James Town (west of Green River), Wyoming, a Union Pacific stack train descends Peru Hill... (more)

A westbound Union Pacific freight arrives at Green River, Wyoming, for a crew change on February 8, 2007. Other power moves around near the engine facility, while two yard switchers take a brief b... (more)

The noisy end of a General Electric AC4400CW locomotive at the Union Pacific engine facility at Green River, Wyoming, on February 8, 2007.

The distinctive mesa looming over the Union Pacific crew change point of Green River, Wyoming has watched a steady progression of motive power move through since rails were laid here in 1869, from... (more)

An eastbound Union Pacific freight descends Peru Hill, west of Green River, Wyoming, during the last light of March 12, 2012.

U.S. 30 is quiet, but not the UP: Beyond the gas pumps in front of a long-abandoned gas station along the old Lincoln Highway (later, U.S. Highway 30) at James Town, west of Green River, Wyoming, ... (more)

A trainload of coal from the West Elk Mine at Arco, Colorado, passes by the iconic Castle Rock, which was clearly visible in photos of the early transcontinental railway in the 1860s. Lead engine... (more)