UP 6417 (AC4400CW) waits in the North Yard for a new crew before heading south through Denver, Colorado on the Joint Line.

UP 6417 (AC4400CW) runs through the Union Pacific's North Yard in Denver, Colorado.

The wide-open expanses of Greenland, Colorado find a Union Pacific train running down-grade and northbound on the Joint Line with a military train as a BNSF coal train heads up-grade towards the P... (more)

BNSF 6015 (ES44AC) rounds the horseshoe curve in Palmer Lake as it heads south on the Joint Line.

BNSF 6238 (ES44AC) muscles a loaded coal train through the trees east of Palmer Lake, Colorado on the Joint Line.

Light power, including UP 1826 (SD40N) works the North Yard in Denver, Colorado.

UP 6047 (AC4400CW-CTE) leads an oil can train west towards Hot Sulphur Springs, Colorado.

Fog, light snow and freezing sleet greet UP 2556 (ES44ACH) as it runs an oil can train through Utah Junction and past the Union Pacific's North Yard in Denver, Colorado.

UP 2752 (C45AH) runs in the cut after exiting the Hermosa Tunnels in Wyoming.

BNSF 8286 (ES44C4) leads a freight through the S curves right before getting to Palmer Lake, Colorado on the Joint Line.

BNSF 6400 (ES44AC) runs a loaded coal southbound on the Joint Line through Colorado Springs, Colorado.

BNSF 6400 (ES44AC) leads a coal train through a snowy Monument, Colorado on the Joint Line.

The California Zephyr runs through Tunnel 3 at Plainview, Colorado on the Moffat Tunnel Sub.

BNSF 8286 (ES44C4) leads a freight through Spruce, Colorado as it runs southbound on the Joint Line.

BNSF 5695 (AC4400CW) shoves a loaded coal train towards Palmer Ridge on the Joint Line through Greenland, Colorado.