BNSF 6928 (ES44C4) runs south on the Joint Line with a stack train destined for Texas.

Union Pacific Big Boy #4014 (4-8-8-4) runs east out of the UP yard in Cheyenne, Wyoming.

Its late in the evening as BNSF 6382 (ES44AC) leads a loaded coal train through Greenland, Colorado.

UP 700 (GP38N) works the North Yard in Denver, Colorado during a heavy snow storm.

UP 4404 (SD70M) leads an officer's train over a bridge at Strassburg, Colorado.

Storm clouds chase UP 4404 (SD70M) as it leads an officer's train over a long trestle at Peoria, Colorado.

Heavy snow is falling fast as light power works the Union Pacific's North Yard in Denver, Colorado.

Amtrak engine #11 (P42DC) kicks up the snow as it leads the California Zephyr towards the east portal of the Moffat Tunnel.

BNSF 6382 (ES44AC) leads a load of coal south on the Joint Line through Castle Rock, Colorado.

BNSF Executive 9709 (SD70MAC) brings a freight into the BNSF yard in Golden, Colorado.

BNSF 2712 GP39-2 joins a mix of light and heavy power waiting for servicing or assignments at the engine facility in Denver, Colorado.

BNSF 7731 meets UPY 625 in the Union Pacific's North Yard in Denver, Colorado.

The rhythm of a loaded coal train runs up the grade on the Joint Line between Greenland and Palmer Lake, Colorado.

BNSF 6382 (ES44AC) runs over a bridge in the town of Castle Rock, Colorado as it heads south on the Joint Line.

BNSF 6382 (ES44AC) runs towards Larkspur, Colorado in evening light.