BNSF 8787 (SD70ACe) leads a loaded coal through 'The Sag' at Spruce, Colorado.

The power for the BNSF's Buck Local sit in front of the historic Longmont Depot, which was built in 1898 by the Colorado and Southern Railroad.

Snow is falling as the Denver Rock Island Railroad's GP9 moves a cut of cars in a small yard in the Denver area known as The Stockyards.

After an extended stay in Denver's Union Station dealing with some engine power issues, a third engine was added to the consist and Amtrak 183 (P42DC) led the train out of the North Yard and onto ... (more)

Amtrak 183 (P42DC) backs the California Zephyr #5 train into Denver's Union Station during a snow storm.

Amtrak 83 (P42DC) leads the California Zephyr over HW 72 in Coal Creek Canyon and starts the climb up to Tunnel #1 at Plainview, Colorado.

When the #5 California Zephyr arrives in Denver from the east it runs through the BNSF's Denver Yard. Here we see engine 205 (P42DC) arriving under a cotton candy colored sunrise as it makes the ... (more)

The Canadian Pacific Railway sent two CP engines to Denver leading a grain train. The second unit was painted up in a heritage scheme.

The BNSF engine servicing facility is nearly full of heavies waiting for service or assignment.

Amtrak 183 leads the California Zephyr into Denver during a snowstorm that hit the entire Front Range of Colorado.

A recently rebuilt UP 712 (GP38-2) shuffles cars in the UP's North Yard in Denver while other light power wait for the call to action.

UP 5524 (C45ACCTE) shoves a loaded coal train through the town of Palmer Lake and will continue to Colorado Springs.

The engineer of UP 7511 (ES44AC) gives a friendly wave as he leads a loaded coal train through Palmer Lake, Colorado.

UP 2001 (SD70M) leads the LaSalle local as it runs through Platteville, Colorado on the Greeley Sub.

RTD commuter train 4032 (Hyundai Eagle P3) takes the elevated section over the UP's North Yard and runs to Arvada, Colorado under a colorful sunrise.