BNSF 1798 (SD40-2) climbs out of the bowl at the yard in downtown Denver, Colorado.

UP 5329 (ES44AC) joins a variety of other motors in the North Yard in Denver, Colorado.

UP 5724 (AC4400CW-CTE) runs a freight past the old Colorado & Southern water tower at the North Yard in Denver, Colorado.

UP 817 (GP38N) passes through a century-old bridge in downtown Denver, Colorado.

A coal train runs through downtown Denver, Colorado as a RTD Light Rail train passes on an adjacent track.

Norfolk Southern #4249 (AC44C6M rebuilt from a Dash9) muscles a grain train through downtown Denver, Colorado.

UP 1957 (SD40N) works the Union Pacific's North Yard in Denver, Colorado.

UP 5724 (AC4400CW-CTE) leads a freight through the North Yard in Denver, Colorado.

As the evening sun sets over Denver, BNSF 8412 (SD70ACe) leads the Beer Train over the South Platte River as it leaves the yard for Golden, Colorado.

The California Zephyr engine #43 gets some attention from the maintenance team at Denver's Union Station. The engine hit a truck which damaged the lift bar and nose of the train. The engine was ... (more)

The California Zephyr and a RTD of Denver commuter rail train run under a viaduct after leaving Denver's Union Station.

BNSF 3171 (GP50) sorts a cut of cars from the yard in downtown Denver, Colorado.

UP 1507 (GP40M-2) joins other light power in the North Yard in Denver, Colorado.

BNSF 1958 (SD40-2) climbs out of the bowl at the large yard in downtown Denver, Colorado.

BNSF 1600 (SD40-2) notches up as it pulls a long cut of cars out of the yard in Denver, Colorado.