A sunny day catches BNSF 7485 muscling a long freight west through Crescent, Colorado on the Moffat Tunnel Sub.

BNSF 9326 (SD70ACe) shoves a loaded coal train through Brighton, Colorado on the Brush Sub.

Two RTD commuter trains are in the Denver Union Station and will soon take passengers to the four corners of the Denver Metro Area.

BNSF 2530 (GP39-3) arrives at the Hudson oil terminal and will exchange a cut of empties for full oil cans to take back to Denver.

UP 700 started life in 1980 as a GP38-2 for the Missouri Pacific. She was recently rebuilt as a GP38N and can now be found working the North Yard in Denver, Colorado.

BNSF ACe 9326 shoves a loaded coal through Hudson as it heads towards West Tonville on the Brush Sub.

Amtrak engine 28 (P42DC) leads a 50th anniversary unit and the California Zephyr through the Denver Yard in the morning. After taking the wye the train will back into Denver Union Station.

A glowing sunrise, low clouds and a little ground fog give an eerie feel to the morning as the California Zephyr 5 runs through Roggen, Colorado.

Here is a closeup of the Hudson Railway Terminal's Baldwin RS4TC, a 1950's ex-US Army engine now working in the large Hudson, Colorado facility shuffling oil cans.

BNSF 7869 (ES44DC) leads a freight around the corner at Crescent, Colorado on its journey down the mountains towards Denver.

The California Zephyr runs through Plainview, Colorado as it begins the journey into the Colorado Rocky Mountains.

An Easter sunrise greets the California Zephyr as it runs towards Wiggins, Colorado.

Hudson Terminal Railroad's 4027 (ex US Army Baldwin RS4TC) is surrounded by oil cans as it sorts cars in the large yard in Hudson, Colorado.

UPY 625 (ex-Missouri Pacific GP15-1) works the Union Pacific's North Yard in Dever, shuffling sand cars.

BNSF 8281 (ES44C4) brings a freight into Denver on the Front Range Sub