Amtrak’s westbound California Zephyr climbs out of Rocky, Colorado, after meeting an eastbound Union Pacific coal train on June 28, 2008. In a few minutes after circling Big 10 Curve, No. 5 will... (more)

A westbound Burlington Northern Santa Fe freight climbs the front range of the Rockies at Rocky, Colorado, as it circle through “Little 10 Curve” on Union Pacific’s former Rio Grande Moffat ... (more)

BNSF 5937 (ES44AC) waits at the Rocky siding after Big Ten Curve for a replacement crew, which will then take the train into Denver, Colorado.

We waited and listened for the California Zephyr, knowing that it would be arriving shortly amid the dense fog and freezing temperatures. Even so, the ghostlike P42DC surprised us as it broke thr... (more)

In super dense fog, blowing snow and freezing temperatures, UP 8919 (SD70ACe) leads a freight through the turn at Rocky, on its way to the North Yard in Denver, Colorado.

Last night's blizzard has coated the trees with a thick layer of snow. The house on top of the foothill sure has a great view of the Moffat Line operations.

The morning's Colorado Ski Train passes a BNSF freight (with assisting UP engine) which has taken the siding at Big Ten Curve.

On February 14, 2015, an eastbound Union Pacific freight fills Big 10 Curve nicely as it approaches Rocky, Colorado. Seven locomotives are up front, beginning with EMD SD70ACe No. 8559, followed ... (more)

AMTK 169 leads the California Zephyr around the Big Ten Curve as it climbs the steep grade towards the Colorado Rocky Mountains. The coal cars you see are parked there permanently as a wind break... (more)

A heavy layer of haze blanketed the Front Range and a bright sunrise silhouetted the Denver skyline behind this morning's Amtrak Colorado Ski Train. AMTK 22 (P42DC) lead the train today.

The early sunrise washes the valley and the track of the Big Ten Curve in a golden hour glow, catching the Amtrak Ski Train as it makes the morning run from Denver to the Winter Park Ski Resort ne... (more)

When I first moved to Colorado, one of my favorite photo targets was the twice-a-week West Local than ran out of North Yard. It still featured a vintage pair of Rio Grande GP30s, even though the r... (more)

UP 6326 (SD70ACe) and four other UP units, including the Heritage Chicago and Northwestern, lead a long freight through the Big Ten Curve cut and turns towards Arvada, Colorado.

AMTK 130 leads the California Zephyr through the foothills of the Colorado Rocky Mountains.

The morning California Zephyr train leaves Arvada behind as it winds through Big Ten Curve and heads towards the Colorado Rocky Mountains.