BNSF 9326 (SD70ACe) struggles as it muscles a heavy coal train through West Roggen on the Brush Sub.

BNSF 7080 (ES44C4) leads a freight through Coal Creek Canyon and will soon arrive in Denver, Colorado.

The BNSF gets ready to move their specialty fire fighting tank cars out of the BNSF engine facility, perhaps for a training exercise. The fire season in Colorado is expected to be bad this sprin... (more)

BNSF 8281 (ES44C4) holds for a green at the Broomfield Siding as it tries to get to Denver on the Front Range Sub.

The California Zephyr has heritage engine 130 (P42DC) on point as it heads towards Tunnel 29 at Pinecliffe, Colorado.

The California Zephyr runs towards Keenesburg at sunrise on the Brush Sub.

UPY 618 (GP15-1) works in the Union Pacific's North Yard in Denver, Colorado.

The snow is falling in the Union Pacific North Yard as UP 1144 (GP60) shuffles a cut of cars around the yard.

UP 6838 (AC4400CW) and BNSF mate hold on the Moffat Tunnel Sub for a green and will then take an empty blade train into the Colorado Rocky Mountains.

BNSF 9163 (SD70ACe) sits in the engine servicing yard, waiting for an assignment that most likely will involve a coal train.

BNSF Warbonnet 746 (Dash9) repositions in the yard at the engine servicing facility in Denver, Colorado.

BNSF 5795 (ES44AC) leads a loaded coal train southbound on the Joint Line through Larkspur, Colorado.

BNSF 1732 (SD40-2) leads a cut of cars over the South Platte River as it leaves the Denver Yard.

BNSF 8482 (SD70ACe) leads an empty coal train eastbound on the Brush Sub through Keenesburg, Colorado.

Commuter RTD train 4022 runs over the North Yard track as it heads towards Arvada, Colorado.