A former Chicago and North Western GE AC4400CW leads six other Armour yellow GEs with a westbound Union Pacific coal train over the east switch of Clay, Colorado, on May 31, 2012. Directly below i... (more)

The front of a westbound BNSF freight approaches Tunnel 1 east of Plainview, Colorado, while the rear of the train passes the detector at mile 22.6 below at the loop over the mouth of Coal Creek C... (more)

A BNSF OCS heading west on UP's Moffat Line, with Westminster, CO in the background. (Thank you to Chip S. for acting as tour guide this day.)

What's this?? Can anyone say why the top of Amtrak's Superliner dining car on Train 5, "California Zephyr," had the word PRESIDENT painted on it? Captured near Clay, Colo. west of Denver on t... (more)

A loaded UP coal train is stretched out along the length of Big 10 Curve, with its two lead locomotives on the lower level of track (heading left to right) and the rear DPU still above (moving rig... (more)

Having just cleared the last of the Moffat District's tunnels, the rear DPU on this loaded coal train drifts downgrade through the curves near Clay siding. The mid-train helpers are visible beyond... (more)

Amtrak No. 5, the California Zephyr, leaves Clay, Colorado, on the climb up the Front Range of the Rockies on the morning of June 13, 2011. The mesa that Big 10 Curve is laid out on can be seen di... (more)

Westbound coal empties snake through a winter wonderland of snow west of Clay, Colorado, on December 29, 2006. Seven big six-motor locomotives power the train; six GE AC4400CWs with a EMD SD9043MA... (more)

All three of Rio Grande’s GP60s lead five other assorted locomotives on Union Pacific’s DVROM (Denver to Roper Yard manifest) freight west of Clay, Colorado, on January 4, 1998. The train is a... (more)

A Union Pacific coal train drops downgrade through Clay, Colorado, on February 28, 2009. Two GE AC4400CWs are on the point, while three mid-train DPUs can be seen passing the rock cut in the backg... (more)

A early autumn edition of the Rio Grande Ski Train climbs out of Clay, Colorado, and approaches Blue Mountain Drive grade crossing on the afternoon of September 27, 1998. Three former Rio Grande G... (more)

Photo 3 of 3---Now that UP 6758 East has cleared, SP 314 West moves on westward around Big 10 Curve and the engineer can look down at his own rear end.

Photo 2 of 3---UP 6758 East is wrapped around Big 10 Curve (behind the camera) as it descends Colorado's Front Range, and the solitary engineer can look right up at his DPU units on the rear.

Photo 1 of 3---On Colorado's Front Range and on the upper level UP 6758 leads loaded coal train eastbound at Clay siding while SP 314 West waits in the siding at Rocky for the loaded train to clea... (more)

A pair of Burlington Northern “6-motors” operating as a manned helper set, shoves on the rear of a westbound BNSF freight encircling the mouth of Coal Creek Canyon west of Clay, Colorado, on F... (more)