Engine problems meant that the California Zephyr #6 train left Denver, Colorado 12 hours late and with one P42DC engine.

Engine problems for the California Zephyr 6 train meant that they ran with one engine going east from Denver. Here we see it running into the Keenesburg, Cut in Keenesburg, Colorado.

The California Zephyr 6 train was over 12 hours late at Denver, offering this rare opportunity to get the train in good sunlight at Keenesburg, Colorado as it ran east on the Brush Sub.

BNSF 9669 leads a North Antelope Mine to Holcomb, KS (Sunflower Electric Power Plant) coal train up the slight grade out of Keenesburg, CO. Even though the grade is only 0.7% at this location, coa... (more)

BNSF 5712 (AC4400CW) passes a field of sunflowers at Keenesburg, Colorado.

Amtrak engine 171 (P42DC) leads the California Zephyr with no ditch lights through Keenesburg, Colorado.

A pink sunrise glints off the side of the California Zephyr as it splits the signals near Keenesburg, Colorado.

BNSF 3127 GP50 runs light as it enters the Keensburg Cut on the Brush Sub.

AMTK 7 (P42DC) leads the California Zephyr through Keenesburg, Colorado on the Brush Sub.

Smoke from Canadian wildfires creates an orange glow at sunrise as the California Zephyr runs through Keenesburg, Colorado.

Amtrak engine #171 (P42DC) leads the California Zephyr through Keenesburg, Colorado as a pink sunrise reflects off the side of the train.

The sights and sounds of a summer thunderstorm have been silenced by the powerful roar of EMD and GE prime movers as they grind away on wet steel rail. Over 17,000 tons of North Antelope Mine coal... (more)

A loaded Comanche train grinds up the 0.6% grade of Keenesburg. The vast open landscape of the Brush Sub is on full display here as late summer thunderstorms forms in the background.

BNSF 9045 (SD70ACe) shoves a loaded coal train through the elevated curve of the Keenesburg Cut on the Brush Sub.

The first minutes of morning sun illuminates BNSF 4244 (ES44C4) as it leads a freight through the elevated curve at Keenesburg, Colorado.