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

The early bird catches the BNSF ACe at Keenesburg, Colorado.

The California Zephyr #5 train runs through Keenesburg, Colorado at dawn.

BNSF 6100 (ES44AC) leads a load of oil cans towards Keenesburg, Colorado. Snow from the night before has frosted the tank cars and blanketed the Colorado Front Range.

Morning's first light catches BNSF 8473 (SD70ACe) shoving a loaded coal through Keenesburg, Colorado.

BNSF 6231 (ES44AC) leads a loaded coal train into Keenesburg, Colorado in freezing temperatures, passing through the freshly fallen snow from the previous night's storm

The temperatures are well below freezing as the California Zephyr runs through Keenesburg, Colorado, whipping up the freshly fallen snow into a blizzard behind the fast moving train.

BNSF 6402 (ES44AC) leads a loaded coal train through Keenesburg with just minutes to spare before sunrise.

BNSF 7703 (ES44DC) leads three other pumpkins and the Z Train into the Keenesburg Cut.

BNSF 7997 (ES44C4) leads the Z Train through the sweeping curve west of Keenesburg, Colorado.

BNSF 7703 (ES44DC) leads the BNSF Z Train through the 'Keenesburg Cut' on its way to Denver, Colorado.

The sunrise glints off the corrugated sides of the coaches as Amtrak 11 (P42DC) leads the California Zephyr through Keenesburg, Colorado on its way to Denver.

An orange sunrise chases BNSF 9098 (SD70ACe) as it runs through Keenesburg, Colorado on its way to Denver.

BNSF 8105 (ES44C4) leads the east bound Z Train through the sweeping curve west of Keenesburg, Colorado.

BNSF 5957 (ES44AC) heads into a spectacular sunrise on the Brush Sub east of Keenesburg, Colorado.