The California Zephyr runs through Coal Creek Canyon as it heads into the Moffat Tunnel District and the Colorado Rocky Mountains.

The California Zephyr runs through Keenesburg, Colorado at sunrise as it heads to Denver on the Brush Sub.

For the first time the California Zephyr 5 train had two of the new Phase VII P42's leading for the cross-country journey.

Coors switcher #997 (SW1000) moves a cut of grain hoppers to the silo at the east end of the brewery.

BNSF 5696 (AC4400CW) leads a loaded coal train towards Hudson, Colorado on the Brush Sub.

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)