UP 7511 (ES44AC) leads a heavy coal train over the Santa Fe Bridge in Larkspur, Colorado.

BNSF 8416 (SD70ACe) heads into a bright sunrise with an empty coal train.

The California Zephyr #5 passes through Wiggins, Colorado right after sunrise, traveling west on the Brush Sub towards Denver.

The California Zephyr #5 train hits the sun after running through Tunnel 1 at Plainview, Colorado.

The California Zephyr exits Tunnel 1 as it heads into the tunnel district on the Moffat Line. There will be 29 more tunnels to go through before the train is on the western side of the Continenta... (more)

On weekends and busy weekdays Denver's Regional Transportation District will pair two commuter trains together, which give the appearance of 4 cars. The trains can run up to 70 miles per hour and... (more)

A long lens gives the appearance of roller coaster ride for passengers of RTD commuter train 4013 as it leaves Denver International Airport and heads to Union Station in downtown Denver, Colorado.... (more)

When leaving Denver's Union Station the California Zephyr runs underneath the Park Avenue Viaduct as it heads north and eventually west towards the Colorado Rocky Mountains.

After rounding the base of Blue Mountain the California Zephyr enters the horseshoe curve in Coal Creek Canyon and will soon run up to Tunnel 1 at Plainview, Colorado.

The California Zephyr runs through Eisele, Colorado (also known as Clay) which is at the base of Blue Mountain.

One opportunity to photograph the switchers that work the Coors Brewery grounds is when they move the special hoppers to and from the grain silo on the east end of the massive complex.

The Coors Brewery critters don't often present themselves for photos, as they mostly operate in the interior areas of the sprawling facility in Golden, Colorado. Here is CORX 997 (SW1000) droppin... (more)

A dynamic and colorful summer sunrise bathes the California Zephyr in golden light as it heads towards Denver, Colorado.

Here is the Royal Gorge Railroad's #403 (F7A) waiting for passengers to board so that it may lead the train through the incredible scenic canyons just west of Canyon City, Colorado.

There is something special about seeing #403 on point. Here we see her leading the Royal Gorge Train earlier this spring.