BNSF 9015 (SD70ACe) leads a coal train through the trees at Palmer Lake, Colorado.

BNSF 6015 (ES44AC) leads a coal train through the S Curve at Castle Rock, Colorado as it runs south on the Joint Line.

BNSF 6021 (ES44AC) muscles a northbound coal train through Sedalia, Colorado on the Joint Line.

The California Zephyr runs next to the Colorado River as it passes through Gore Canyon, Colorado.

UP 6748 (ES44AC) leads a military train through with wide open ranchlands of Greenland, Colorado. This engine has a plaque on the side which says, "For his unwavering commitment to safety, t... (more)

UP 2540 (ES44AC) runs through snow and sub-freezing temperatures as it leads an autorack train through Tie Siding, Wyoming.

UP 8719 (SD70ACe) leaves the Cheyenne Yard in a heavy snowstorm and meets another freight coming into the yard.

UP 7242 (AC4400CW) takes an oil can train along the high ridge past a ranch west of Hot Sulphur Springs, Colorado.

UP 6417 (AC4400CW) leads a military train through Littleton, Colorado as it runs south on the Joint Line.

BNSF ACe 9015 leads a loaded coal train up the long grade between Greenland and Spruce, Colorado.

BNSF 6015 (ES44AC) leads a loaded coal southbound on the Joint Line towards Larkspur, Colorado.

BNSF 8809 (SD70MAC) brings a freight into Longmont, Colorado.

These four power units work the Longmont, Colorado jobs. BNSF 2857 (GP39-2) works the Buck Local between Lafeyette, Boulder and Longmont and BNSF 8809 (SD70MAC) works the Fort Collins and Lovel... (more)

Sub-freezing temperatures and snow can't keep a railfan from watching BNSF 6224 (ES44AC) bring a coal train into the siding at Barr Lake on the Brush Sub.

HTR 646 is a 77-year-old veteran working with the Hudson Terminal Railroad in Hudson, Colorado while the first snow of the season falls on the Front Range. The Alco S1 was built in 1946 for the ... (more)