BNSF 6383 (ES44AC) crosses the Cache La Poudre River in Fort Collins.

BNSF 9295 (SD70ACe) leads a freight through Tolland, Colorado on the Moffat Tunnel Sub.

Light snow falls on UP 1507 (SD40N) as it drops off a gondola at a recycling facility in Littleton, Colorado.

Heavy snow falls at Denver's Union Station as RTD 4001 (Hyundai Eagle P3) uses power from the catenaries to move through the yard.

A veteran Alco S1 working at the Hudson Terminal Railroad muscles a cut of oil cans onto a siding.

The orange glow of a sunrise catches BNSF 9029 (SD70ACe) muscling a loaded coal train through the cut at Keenesburg, Colorado.

Sunrise catches BNSF 2949 (GP39-2) waiting for order to go sort cars in the Denver Yard.

UP 4455 (0-6-0) switcher was built in 1920 by the Lima Locomotive Works in 1920 for the Union Pacific Railroad. It was sold in 1949 to Monolith Portland Midwest Company in Laramie, Wyoming, where... (more)

This 0-4-0 Tank Locomotive was built in 1921 by the American Locomotive Company for the Standard Oil Company and worked at the Casper, Wyoming refinery. It was later transferred to the American O... (more)

Rio Grande #318 (2-8-0) was built by the Baldwin Locomotive Works of Philadelphia, PA in 1896 for the Florence & Cripple Creek Railroad. It was later sold to the Denver & Rio Grande Railroad and ... (more)

A visitor helps her kids into the cab of Rio Grande Southern #74 (2-8-0), which was built by the Brooks Locomotive Works of Dunkirk, NY in 1898 for the Colorado & North Western Railroad. It was l... (more)

The Colorado Railroad Museum’s Colorado & Southern Rotary Steam Snow Plow #99201 was built by the Cooke Locomotive and Machine Works in 1899. The plow was fitted with standard gauge trucks and ... (more)

A sucker hole of sunlight shines on this loaded Boeing car bound for Seattle for final assembly as it passes the Front Range at Colorado Springs on the Joint Line.

Freezing fog and light snow blankets Plainview, Colorado as the Amtrak Winter Park Express Ski Train exits Tunnel #1 on its way into the Colorado Rocky Mountains.

The California Zephyr rounds the corner at the base of Blue Mountain and will enter Coal Creek Canyon.