The California Zephyr 5 train runs through Keenesburg, Colorado at sunrise on the Brush Sub.

Its snowing at Tolland, Colorado as UP 5430 (GE AC4400CW-CTE) leads a coal train towards the east portal of the Moffat Tunnel.

BNSF 7977 (ES44C4) heads towards Palmer Lake on the Joint Line.

BNSF 7728 (ES44DC) runs under Park Avenue Viaduct as it gets ready to leave Denver and head east on the Brush Sub.

In a few months these Boeing 737 fuselages will be flying above the clouds instead of riding the rails at ground level.

A BNSF Heritage I engine leads a short Boeing 737 fuselage train through Palmer Lake, Colorado as it runs north on the Joint Line.

The City of Denver in the upper left of the photo is the destination for a BNSF freight which is navigating through Big Ten Curve at Rocky, Colorado.

BNSF 4327 (Dash 9-44CW) runs a freight through Coal Creek Canyon as it heads to Denver, Colorado.

BNSF 4327 (Dash9) leads a freight through Rollinsville, Colorado as it heads down the mountain on the Moffat Tunnel Sub.

UP 7236 (AC4400CW) shoves a coal train through Tolland, Colorado.

UP 5430 (ES44AC) leads a coal train towards the Moffat Tunnel in an intense snowstorm.

The Southwest Chief runs through the crossover at Gallinas, Colorado as it heads towards Trinidad.

The California Zephyr runs towards the Moffat Tunnel in a fierce snow storm.

BNSF 7977 (ES44C4) leads a JB Hunt stack train towards Palmer Lake on the Joint Line.

BNSF 3784 (ES44C4) leads a freight through Little Ten Curve at Rocky, Colorado.