The California Zephyr has left the blowing snow in the Colorado Rocky Mountains and heads towards Denver as the sunset transitions to the blue hour.

An orange sunset glints off the leads motor of the California Zephyr #6 train as it runs through Leyden, Colorado on its way to Denver.

Sunset Last light at Leyden, Amtrak 6.

UP 7654 (ES44C) runs past the signals at Leyden, Colorado as it leads a train towards Denver on the Moffat Tunnel Sub.

UP 7654 (ES44AC) leads a freight through the trees at Leyden, Colorado and will soon be in the Union Pacific's North Yard in Denver.

UP 5329 (ES44AC) leads the Grand Junction to Denver train east on the Moffat Tunnel Sub and into the bright Colorado sunrise.

BNSF 4250 (ES44C4) leads the California Zephyr over a bridge in Leyden, Colorado. This road will soon be widened to four lanes, which will necessitate the removal of the iconic Rio Grande Railroa... (more)

A golden sunrise catches the Winter Park Express Ski Train as it kicks up some snow while running west on the Moffat Tunnel Sub.

The California Zephyr runs west on the Moffat Tunnel Sub through Leyden, Colorado.

Snow is falling on the Moffat Tunnel Sub as BNSF 8443 (SD70ACe) shoves a freight past the Cold War Horse statue, erected as a caution to the memory of the nearby Rocky Flats defense facility which... (more)

Temps are freezing and the Amtrak Winter Park Express kicks up the snow as it runs through Leyden, Colorado at sunrise.

The Winter Park Express Ski Train runs through Leyden, Colorado at sunrise on the Moffat Tunnel Sub.

Amtrak engine #75 (P42DC in Phase VII paint) leads the Winter Park Express Ski Train through Leyden, Colorado at sunrise.

The Winter Park Express Ski Train runs through Leyden, Colorado at sunrise.

BNSF 8597 (SD70ACe) runs eastbound through Leyden, Colorado as it heads to Denver on the Moffat Tunnel Sub.