Two Patrick Henry private cars joined the California Zephyr as it diverted through Cheyenne, Wyoming due to flooding in Nebraska.

There are 42 engines waiting for service or assignments in the yard of the BNSF engine servicing facility in Denver, Colorado.

The California Zephyr runs through the signals at Keenesburg as a beautiful Colorado sunrise gives the area an orange glow.

The California Zephyr gets ready to enter Little Ten Curve as it begins the climb on the Moffat Tunnel Sub.

A Norfolk Southern pony joins other UP motors at the service island in the North Yard in Denver, Colorado.

Denver Rock Island Railroad's GP9 (#88) gets ready to leave the yard.

Denver Rock Island Railroad's #553 (SW8) shuffles cars in a north Denver industrial area while storms fire off in the distance.

Snow and freezing temperatures cover the tracks as UP 8070 (ES44AC) muscles a loaded coal train past the sculpture called 'Cold War Horse', which acknowledges the former Rocky Flats plant that bui... (more)

UP 8243 (ES44AC) gets ready to leads a freight into Tunnel #1 at Plainview, Colorado.

A BNSF freight enters the Big Ten Curve at Rocky, Colorado as it climbs the grade going west on the Moffat Tunnel Sub.

Kansas City Southern #4541 (AC4400CW) runs through Monument, Colorado as it heads south on the Joint Line.

Kansas City Southern Belle #4541 (AC4400CW) passes by a bee farm in the small town of Greenland, Colorado.

Kansas City Southern Belle #4541 (AC4400CW) passes the charred remains of the iconic red barn in Greenland, Colorado. Lightning struck the historic barn, which then burned to the ground, fortun... (more)

The California Zephyr runs through Rollinsville, Colorado as it climbs higher on the Moffat Tunnel Sub.

The California Zephyr leaves downtown Denver and passes under the Park Avenue Viaduct and by a Warbonnet waiting for service at the BNSF engine servicing facility.