Adding meaning to the phrase “S curve, ” Union Pacific’s Denver to Salt Lake City manifest freight MNYRO climbs the two-percent grade into Rocky, Colorado, on February 2, 2014. Four GE AC440... (more)

On a snowy February 2, 2014, westbound Union Pacific freight MNYRO is climbing the 2% grade between Rocky and Eisele (formerly Clay), Colorado. The head end is about to take down the signal at eas... (more)

After a nice Colorado snowfall, Union Pacific’s Denver to Salt Lake City manifest freight passes through Rocky on February 2, 2014. Four AC4400CWs are on the point, with a SD70ACe/AC4400CW DPU d... (more)

After picking up a tank car at Chem Spur, Union Pacific’s West Local heads for Rocky Spur through Barbara Gulch just east of Rocky, Colorado, on December 16, 1997. Powering the local are venerab... (more)

As an eastbound Union Pacific coal train approaches the west switch at Rocky, Colorado, on June 9, 2013, a hi-rail follows closely behind going through Eisele (formerly Clay) on the tracks above. ... (more)

Ample springtime rainfall bring out the wildflowers among green grasses on the Front Range mountains in the foreground as a westbound Union Pacific coal empty departs Rocky, Colorado, after meetin... (more)

The DPUs of an eastbound Union Pacific coal train passes another coal load tucked in the siding at Rocky, Colorado, on April 28, 2002.

An eastbound Burlington Northern Santa Fe manifest freight approaches the west switch at Rocky, Colorado, on April 13, 2002. Four GE C44-9Ws power the train, with one of them set up as rear DPU, t... (more)

Amtrak No. 6, the California Zephyr, passes the hopper car windbreak on Big 10 Curve west of Rocky, Colorado, on May 29, 2011. In the background is some of the sprawl of Arvada, and if you look cl... (more)

Amtrak No. 5, the California Zephyr is westbound, but for a moment on the approach to Big 10 Curve, is pointed east into the morning sun, as the train travels between Rocky and Clay on May 31, 201... (more)

Heading for a Rocky meet
In a view from the middle of Big 10 Curve between Rocky and Clay, Colorado, a BNSF eastbound train led by Dash 9-44CW No. 4349 drops downgrade toward a meet wit... (more)

The Westbound Denver Ski Train heads around the "Little Ten" curve with a pair of Southern Pacific Morrison Knudsen rebuilt GP40M-2's.

Union Pacific’s MNYRO (Denver’s North Yard to Roper Yard in Salt Lake City) climbs the front range of the Rockies at Rocky, Colorado, on August 26, 2013.

Union Pacific’s West Local on the Moffat Tunnel Subdivision is dropping off of Rocky Spur at Rocky, Colorado, on February 19, 2002. Powering the train is a nice set of Rio Grande GP40-2, with No... (more)

A westbound work train shuttles rip-rap to Plain, Colorado, to help fill in a gigantic hole caused by heavy rains during the week of September 9. The train is shown just east of Rocky siding about... (more)