A BNSF freight runs through the trees as it heads south on the Joint Line through Larkspur, Colorado.

One of the fan favorites at the Colorado Railroad Museum is Denver & Rio Grande Western #5771 (EMD F9), which used to run the Rio Grande Zephyr between Denver, Colorado and Salt Lake City, Utah. ... (more)

BNSF 5328 (Dash9) leads another Dash9 in an older Heritage scheme through Acequia, Colorado.

BNSF 5328 (Dash9) leads a freight past the Three Oaks Ranch in Castle Rock, Colorado.

BNSF 5328 (Dash9) runs through the Black Forest as it heads south on the Joint Line.

BNSF 5328 (Dash9) leads a freight towards Larkspur, Colorado as it runs southbound on the Joint Line.

BNSF 5328 (Dash9) pulls a long train of auto racks past the Comcast facility in Douglas County, Colorado.

Rio Grande Southern #7 Galloping Goose runs past a functional water tower at the Colorado Railroad Museum in Golden, Colorado.

The Colorado Railroad Museum's Rio Grande Southern #7 Galloping Goose gives rides to happy visitors on a sunny day.

The California Zephyr runs through Coal Creek Canyon, Colorado and will soon be passing through the first of 29 tunnels before reaching the west side of the Continental Divide.

BNSF 1984 (SD40-2) runs light past the Union Pacific's North Yard in Denver, Colorado.

BNSF 1826 (SD40-2) in an early heritage paint scheme sits in a yard in Golden, Colorado.

UPY 618 (GP15-1) works the Union Pacific's North Yard in Denver, Colorado.

A Union Pacific oil can train exits Tunnel #1 at Plainview, Colorado.

BNSF 4696 (Dash9) heads to the yard in Golden, Colorado to swap grain cars at the Coors Brewery plant located downtown.