The California Zephyr climbs the steep grade to Tunnel #1 at Plainview, Colorado. You can spot the two Patrick Henry private cars pulling up the rear of the train.

The Denver Rock Island Railroad's SW1500 heads to the small yard in North Denver to move a cut of cars.

UP 1826 (SD40N) makes like an Alco and smokes as it pulls a heavy cut from the North Yard for sorting.

BNSF 5409 (Dash9) brings a colorful consist past the Union Pacific's North Yard.

Sometimes the timing all comes together. The California Zephyr was just a little late arriving at Keenesburg, Colorado, which allowed the fog to roll in and the bright orange sun to elevate just h... (more)

BNSF 7322 (ES44DC) leads a stack train into the Keenesburg Cut and it heads east on the Joint Line.

RTD commuter train 4052 (Hyundai Eagle P3) runs on the elevated section of the 'A Line' which links the downtown Denver Union Station and Denver International Airport.

It is great to see the SD70MAC Executive-Grinstein units making the rotations on the coal trains. Here we see three of them at the BNSF engine servicing facility in Denver, Colorado.

A LORAM rail grinding train waits on a Union Pacific siding at Plainview, Colorado.

BNSF 5741 (AC4400CW) crosses an old Rio Grande era bridge in Larkspur, Colorado.

BNSF 3801 (ET44C4) leads 8 other engines and a long freight towards Denver, Colorado.

The California Zephyr back into Denver's Union Station between the myriad of catenary wires and posts that support the electrified RTD commuter and light rail train systems.

The morning's first light catches the Royal Gorge Railroad's CRRX 3104 (GP40) anchoring the east end of the passenger train as it waits in the Canyon City station for passengers to arrive.

What at first glance could pass for a picture taken in the late 1960's or early 1970's, the Coors SW1001 moves a cut of beer cars at the Molson Coors Brewery in Golden, Colorado in February of 202... (more)

An orange Colorado Sunrise catches the California Zephyr as it heads towards Keenesburg, Colorado.