Denver was a gracious host for the Big Boy! History captured at Denver Union Station! Big Boy, 4014 is seen here backing into busy Union Station back in July of 2022. Incredible sight to... (more)

UP 6675 (AC4400CW) leads an oil can through the North Yard in Denver.

The hot Spokane, WA to Alliance, TX Q-train emerges out of Downtown Denver as it passes two tied down coal trains at LoDo. The Q-train, led by Warbonnet #636, is heading to Englewood for the crew ... (more)

UP 8697 (SD70ACe) waits in the Union Pacific's North Yard for an assigned train.

BNSF 6366 (ES44AC) sits in the engine servicing yard at sunrise, ready to be assigned to a waiting train.

A golden Colorado sunrise greets passenger on the RTD commuter train that runs between Denver and Arvada.

You can still find GP40-2's working in Denver. UP 1357 sits in the Union Pacific's North Yard waiting for an assignment.

UP 1980 (GP38N) sits on the ready track next to the fueling island in the Union Pacific's North Yard in Denver, Colorado.

UP 6675 (AC4400CW) leads an oil can train through the North Yard in Denver, Colorado.

UP 1381 (ex-Southern Pacific GP40-2) works in the Union Pacific's North Yard in Denver, Colorado.

The California Zephyr runs through the North Yard and past the former Colorado and Southern water tower.

Two warbonnets are spotted waiting for service in the BNSF engine yard in Denver, Colorado.

UP 1865 (SD40N) waits in the North Yard for its turn to shuffle freight cars.

The majority of power in the Denver North Yard on this day is light units, including UP 1507 (GP40M).

UP 6750 (AC4400CW) has just dropped of a string of coal cars in the Union Pacific's North Yard in Denver, Colorado.