Canadian Pacific engine #8734 (ES44AC) leads a loaded coal train south on the Joint Line through Nixon, Colorado.

Coors motor #998 (SW1001) runs solo through the yard towards a cut of beer cars.

Sunrise creates an orange glow over the California Zephyr as it runs through Keenesburg, Colorado on the Brush Sub.

The California Zephyr runs through Little Ten Curve as it heads to Big Ten and the Colorado Rocky Mountains.

UP 9050 (SD70AH) muscles an oil can train through Rollinsville as it heads to Denver on the Moffat Tunnel Sub.

Light snow is falling on the Brush Sub as BNSF 7735 (ES44DC) runs light with a group of motors towards Denver, Colorado.

Heavy snow is falling on the BNSF engine servicing facility in Denver, Colorado.

BNSF 2530 (GP39-3) runs to the BNSF yard in Longmont, Colorado.

BNSF 6717 (ES44DC) brings the DenLau freight train into Denver, Colorado.

UP 845 (GP38-2) sits in the North Yard along with a Southern Pacific patched unit.

UP 1507 (GP40M) brings a freight into the BNSF yard in downtown Denver, Colorado.

UP 9050 (SD70AH) shoves an oil can train through Pinecliffe on the Moffat Tunnel Sub.

UP 6608 (ES44AC) leads a freight south on the Greeley Sub through Brighton, Colorado.

UP 9050 (SD70AH) runs along a shelf as it muscles an oil can train towards Rollinsville, Colorado on the Moffat Tunnel Sub.

UP 9003 (SD70AH) leads a long oil can train down the valley into Tolland, Colorado after exiting the Moffat Tunnel east portal.