BNSF 9017 (SD70ACe) runs the S curves leading to Palmer Lake on the Joint Line.

BNSF 9017 (SD70ACe) leads a loaded coal train south on the Joint Line through Monument, Colorado.

BNSF 9017 (SD70ACe) leads a coal train through Greenland, Colorado on the Joint Line.

BNSF 2530 (GP39-3) leads a short freight towards Broomfield on the Front Range Sub.

ATSF 2-6-2 1874 leads a freight east of Pueblo Colorado in 1945. Otto Perry photo, from my collection.

A westbound Burlington Northern Santa Fe ballast train slowly climbs the grade though Clay, Colorado, on April 28, 2002. On the point of the heavy train is a trio of SD70MACs, assisted by a pair o... (more)

A westbound Burlington Northern Santa Fe ballast train just finished rounding Big 10 Curve and is now passing the east switch of Clay, Colorado, on April 28, 2002. On the point of the heavy train ... (more)

UP 845 (GP38-2) works the Union Pacific's North Yard in Denver, Colorado.

Denver Rock Island Railroad's GP9 sits with other motors in the yard in Denver, Colorado.

A Kansas City Southern Belle ES44AC leads a grain train south on the Joint Line between Greenland and Palmer Lake, Colorado.

BNSF 9017 (SD70ACe) leads a coal train through the S curve at Spruce, Colorado as it heads south on the Joint Line.

BNSF ACe 9017 runs over the Santa Fe Bridge in Larkspur, Colorado.

BNSF 9082 (SD70ACe) muscles a coal train through Keenesburg, Colorado on the Brush Sub.

BNSF 6751 (ES44C4) joins other heavies in the yard of the engine servicing facility in Denver, Colorado as a RTD commuter train drops down from the elevated track.

Amtrak's Winter Park Express is about to enter Tunnel 29 at Pinecliffe, Colorado as heavy snow falls in the Colorado Rocky Mountains.