Switching power, local power, and origination/protection power.

On the afternoon of September 12, 2007, a Union Pacific stack train threads Hermosa Tunnel on Track 2 at Hermosa, Wyoming, while heading west on the main line over Sherman Hill.

After changing crews, a westbound Union Pacific intermodal train begins the climb of Peru Hill at Green River, Wyoming, on September 26, 2020.

On October 18, 2018, a long string of BNSF EMD SD70MAC locomotives is in long-term storage alongside BNSF’s yard between Donkey Creek and Rozet, Wyoming, on the railroad’s Black Hills Subdivis... (more)

BNSF EMD SD70MAC No. 8912 leads BNSF’s Cowley turn past milepost 414 on the Casper Subdivision as it follows the Big Horn River through Sheep Canyon north of Greybull, Wyoming, on the morning of... (more)

A sunny afternoon lights up an eastbound BNSF coal train following the North Platte River through Wendover Canyon between just west of Wendover, Wyoming on July 6, 2005.

Scenes like this were common during the Cheyenne Frontier Days while the train rested before returning to Denver. In 2022, it was announced The Centennial #6936 is leaving the UP Heritage Fleet b... (more)

The Challenger rests after running up from Denver, before a trip out east the following morning with the "Missouri River Eagle" special. There were no large crowds this brisk September ... (more)

UP Big Boy 4014 (4-8-8-4) splits the signals at Egbert, Wyoming. There are many railfans eagerly waiting to catch this beauty again this year as it runs west from Cheyenne.

Late in the day of May 29, 1998, a southbound Burlington Northern Santa Fe coal train crosses the bridge over Caballo Creek at milepost 17 on the Orin Line in Wyoming’s Powder River Basin.

Heavy railroad ties and stout pipe is utilized at a corner in the fencing along Wyoming’s Orin Line on Logan Hill, and in the background, another BNSF coal empty cruises up the hill at Logan on ... (more)

Union Pacific Northern No. 844 gets its rods and crankpins lubed during a service stop at Rawlins, Wyoming, on May 6, 2019. The 4-8-4 was accompanying UP Big Boy No. 4014 on a trip west to Ogden, ... (more)

Union Pacific Big Boy #4014 (4-8-8-4) runs through the iconic S curves of Archer Hill east of Cheyenne, Wyoming.

An empty Chicago & North Western unit coal train rolls past milepost 110 through Walker, Wyoming, on the afternoon of July 25, 1992. The train is headed back to load at one of the mines in Powder ... (more)