BNSF 9750 (SD70MACe) runs towards Larkspur, Colorado as it heads south on the Joint Line.
Union Pacific's Big Boy #4014 puts on a steam show as it runs through the UP's North Yard in Denver, Colorado.
Union Pacific's Big Boy #4014 runs towards Denver, Colorado, where it will stop for a day before finally heading to the home base in Cheyenne, Wyoming.
A bike rider is about to get a touch of steam as the Union Pacific's Big Boy #4014 crosses a bridge in Commerce City, Colorado, home of a number of oil refineries.
UP 4014 BigBoy (4-8-8-4) backs through the Union Pacific's North Yard in Denver, Colorado as it gets ready to head back to the home base in Cheyenne, Wyoming.
BNSF 5235 (Dash9) runs through Sedalia, Colorado as it leads an intermodal train on the Joint Line.
A SD70MACe motor runs through a cut as it leads a loaded coal train south on the Joint Line through Sedalia, Colorado.
A SD70MACe leads a loaded coal train through the trees of the Black Forest as it runs south on the Joint Line.
BNSF 9750 (SD70MACe) leads a loaded coal train through Douglas County as it heads south on the Joint Line.
The California Zephyr reflects off a puddle as it approaches downtown Denver, Colorado and will soon back into Denver's Union Station.
A golden sunset casts a glow over the California Zephyr as it heads towards Union Station in downtown Denver, Colorado
UP 1905 (SD40N) gets ready to pull another string of cars out of the side track for sorting in the North Yard.
UPY 618 (GP15-1) heads into the North Yard in Denver, Colorado to sort freight cars.
It is standing room only for railfans on the Church Ranch Road bridge, watching as the Union Pacific's Big Boy #4014 runs underneath as it heads towards Speer, Wyoming.
The Union Pacific's Big Boy #4014 backs the train into the yard in Cheyenne, Wyoming.
