BNSF 9295 (SD70ACe) leads a freight through Tolland, Colorado as it heads towards the Moffat Tunnel.

A KCS ES44AC leads a grain train south on the Joint Line through Castle Rock, Colorado.

A KCS Southern Bell leads a hopper train south on the Joint Line through Monument, Colorado.

Amtrak #30 (P42DC) leads the Winter Park Express into the S curve at Coal Creek Canyon.

AMTK 158 (P42DC) kicks up the snow in an orange glow of the sunrise as it runs through Keenesburg, Colorado on the Brush Sub.

The Amtrak Winter Park Express runs through a snowy cut at Coal Creek Canyon, Colorado.

BNSF 8115 (ES44C4) leads a stack train over the Santa Fe Bridge in Larkspur, Colorado.

Welcome to the wayback machine in Denver, Colorado. When was the last time you saw two Warbonnets and a Burlington Northern motor side by side?

A variety of light and heavy power wait for servicing at the engine facility in Denver, Colorado,

BNSF ACe 9272 leans into the elevated curve at Keenesburg, Colorado as it heads east on the Brush Sub.

BNSF 6048 (ES44AC) leads a freight around the corner at Crescent, Colorado under a beautiful Colorado sunny day.

The California Zephyr pulls into Denver, Colorado as light snow falls. The train will now back up into Denver's Union Station to change crew, pick up and discharge passengers, and service the eng... (more)

Amtrak engine #169 (P42DC) sits in reserve at the BNSF engine facility in downtown Denver. If there exists a problem with an Amtrak motor while in the Denver area this engine would get called to ... (more)

Amtrak's Winter Park Express Ski Train exits Tunnel #1 as it takes skiers from Denver to the ski resort just on the other side of the Moffat Tunnel.

Kansas City Southern #4709 (ES44AC) leads a train south on the Joint Line, which parallels Interstate 25 between Castle Rock and Larkspur, Colorado.