The California Zephyr #6 train exits Tunnel #1 at Plainview, Colorado.

A Colorado sunrise glints off the Denver skyline as the Winter Park Express Ski Train leaves for the Moffat Tunnel Sub.

The engineer for Amtrak's Winter Park Express Ski Train saddles up and gets ready to leave Winter Park, Colorado and enter the Moffat Tunnel on the journey back to Denver.

The Amtrak Winter Park Express Ski Train exits Tunnel 1 at Plainview Colorado as it heads back to Denver, Colorado.

The Winter Park Express Ski Train leaves the platform at Winter Park after dropping passengers off in heavy snow and will hold at Fraser until ready to pick up the riders for the trip back to Denv... (more)

Light snow if falling as Amtrak engine #127 (P42DC) leads the Winter Park Express Ski Train back to the platform to pick up passenger for the ride back to Denver, Colorado.

The Winter Park Express Ski Train meets a Union Pacific oil can train at Tolland, Colorado as it heads back to Denver with a load of tired skiers, hikers and snowboarders.

The last eastbound Sunset Limited before the Christmas holiday makes it's last stop in Arizona, which is in the small city of Benson.

Amtrak engine #127 (P42DC) rounds the corner leading up to Tunnel #1 at Plainview, Colorado.

The California Zephyr heads towards Tunnel #1 at Plainview, Colorado after having run through Coal Creek Canyon.

The California Zephyr runs through Coal Creek Canyon as it begins the climb into the Colorado Rocky Mountains.

The last eastbound Sunset Limited before the Christmas holiday rolls through Pantano, heading towards its next and last stop in Arizona, which is the city of Benson, another 17 miles east of here.... (more)

The Amtrak Winter Park Express Ski Train exits the east portal of the Moffat Tunnel as it brings passengers home to Denver after a day on the slopes of the ski resort.

The California Zephyr arrives in Keenesburg, Colorado as dawn breaks on the Brush Sub.

The California Zephyr 5 arrives in Keenesburg just as the sun is rising in the east.