Union Pacific MRONY, a Roper Yard in Salt Lake City to North Yard in Denver manifest freight, rolls through Eisele (formerly Clay), Colorado on June 2, 2013. In the background are the Flat Iron ro... (more)

With the Flatiron rock formations above Boulder, Colorado, in the background, Union Pacific’s MRONY manifest freight from Salt Lake City to Denver drops downgrade at Eisele, Colorado, on the aft... (more)

Looking right at home, Union Pacific No. 1989, the Rio Grande heritage locomotive, exits Tunnel 29 east of Pinecliffe, Colorado, leading UP’s MRONY over former D&RGW territory on July 10, 2006.

On February 14, 2015, an eastbound Union Pacific freight fills Big 10 Curve nicely as it approaches Rocky, Colorado. Seven locomotives are up front, beginning with EMD SD70ACe No. 8559, followed ... (more)

Union Pacific’s Roper Yard in Salt Lake City to North Yard in Denver manifest freight curves through Rocky, Colorado, on a snowy April 23, 2001.

Union Pacific’s manifest freight from Salt Lake City to Denver drops fills “Little 10 Curve” at Rocky, Colorado, on the afternoon of February 13, 2016. In the foreground is the main line and... (more)

Union Pacific’s MRONY manifest freight from Salt Lake City to Denver drops downgrade through Big 10 Curve west of Rocky, Colorado, on the afternoon of February 13, 2016. In the foreground is the... (more)

Union Pacific’s manifest freight from Salt Lake City to Denver drops downgrade at Eisele, Colorado, on the afternoon of February 13, 2016. Above the locomotives is the west switch at Rocky, wher... (more)

Snow-covered scenery at the mouth of Coal Creek Canyon provides a wintery backdrop for Union Pacific's freight MRONY approaching Blue Mountain grade crossing west of Clay, Colorado, on the spring ... (more)

Union Pacific manifest freight MRONY descends through Big 10 Curve west of Rocky, Colorado, on November 17, 2014.

Union Pacific’s MRONY manifest freight snakes eastbound along the Colorado River and is entering Little Gore Canyon east of Radium, Colorado, on the afternoon of August 4, 2014. A trio of EMDs p... (more)

Union Pacific manifest train MRONY heads east down from Soldier Summit

Running on home territory, Union Pacific No. 1989, the Rio Grande heritage locomotive, exits 75-foot Tunnel 29 east of Pinecliffe, Colorado, on July 10, 2006.

Surrounded by the aftermath of a springtime snowstorm in the Rockies, Union Pacific’s MRONY manifest freight departs the siding at Pinecliffe, Colorado, on a bright April 23, 2001.

Union Pacific’s MRONY (Salt Lake City’s Roper Yard North Yard in Denver) freight heads downgrade through a snowy Coal Creek Canyon between Plainview and Eisele (formerly Clay), Colorado, on Ma... (more)