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.

The Colorado Ski Train is once again in operation for the 2020 season. Here we see Amtrak 175 leaving the Denver skyline behind at dawn as it climbs through Big Ten Curve. The train shuttles rider... (more)

The California Zephyr, complete with two baggage cars, climbs the grade to Tunnel #1 on the Moffat Line.

Heavy snow is falling as UP 8986 (SD70ACe) strains to pull a loaded coal train up the hill at Rocky, Colorado.

Clouds roll off the front range mountains of Colorado as a westbound Union Pacific coal empty heads west on the Moffat Tunnel Subdivision west of Rocky on September 27, 2019.

Amtrak’s westbound California Zephyr climbs toward Big 10 Curve west of Rocky, Colorado, on September 27, 2019.

The West Local powered by Rio Grande GP30 Nos. 3002 and 3006 travels Rocky Spur above an eastbound coal train led by Southern Pacific GE AC4400CW No. 267, that is tied down in Rocky siding, on Feb... (more)

After coming down from the Moffat Line and dropping into the Big Ten Curve bowl, BNSF 7651 (ES44DC) will complete the 270 degree radius and head to Denver.

BNSF 7651 (ES44DC) leads a freight down into the bowl known as Big Ten Curve. The drop in grade is notable as the train will wind its way down through a 270 degree radius.