The California Zephyr #5 runs through the BNSF yard in Denver before backing into Union Station.

UP 7956 (AC45CCTE) leads a Herzog ballast train into the setting sun.

BNSF 3839 (ET44C4) has just been serviced with fuel and sand and is ready to head to a waiting train in the Denver Yard.

BNSF 1908 (SD40-2) joins a Warbonnet in the BNSF engine yard in Denver, Colorado.

SCL E6A poses at Denvers Union station

RTD commuter train 4026 (Hyundai Eagle P3) runs on the elevated section of track past the UP's North Yard at dawn.

UP 801 (ex-Missouri Pacific GP38-2) holds in the Union Pacific's North Yard in Denver, Colorado as a RTD Commuter Train runs on the elevated section of track.

A group of heavies wait in the BNSF engine servicing facility yard for assignment to a train.

BNSF 1798 (SD40-2) joins a variety power waiting for orders to the Denver Yard.

BNSF 766 (Dash9) waits with a Heritage III painted motor in the Denver Yard.

UPY 691 (GP15-1) works the Union Pacific's North Yard in Denver, Colorado.

A remote-control engineer catches a ride back to the head end of the Union Pacific's North Yard in Denver, Colorado.

UPY 625 (GP15-1) works the Union Pacific's North Yard in Denver, Colorado.

UP 1507 has had an interesting career, starting life for the Baltimore and Ohio in 1969 as a GP40, then moving to the Southern Pacific after being rebuilt as a GP40M-2. You can now find it workin... (more)

UP 9013 (SD70ACe) leads a freight past a power plant in northeast Denver.