UP 8080 (AC45CCTE) heads into the late evening sun at Tolland, Colorado as it heads west on the Moffat Tunnel Sub.

UP 8216 (ES44AC) runs through Tolland, Colorado as it heads eastbound on the Moffat Tunnel Sub.

The snow is falling fast at UP 7236 (AC4400CW) shoves a coal train into the Moffat Tunnel.

BNSF 4327 (Dash9) leads a freight out of the east portal of the Moffat Tunnel and into a heavy Rocky Mountain snowstorm.

The California Zephyr, running without a baggage car, passes an idle UP freight as it runs through Tolland, Colorado during a heavy snowstorm.

A crewman from UP 8080 does a visual check of the Winter Park Express Ski Train as it runs past the siding at Tolland, Colorado.

UP 8080 (AC45CCTE) leads an oil can train around the elevated curve at Tolland, 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.

UP 8216 (ES44AC) leaves the Colorado Rocky Mountains behind as it heads towards Rollinsville on the Moffat Tunnel Sub.

Amtrak engine #181 (P42DC) leads the California Zephyr 5 train through Tolland as it heads to the Moffat Tunnel.

Snow is falling as Amtrak engine #163 (P42DC) leads the Winter Park Express Ski Train through the east portal of the Moffat Tunnel

The Winter Park Express Ski Train runs through the east portal of the Moffat Tunnel and into a snowstorm as it heads down the mountain towards Denver.

Amtrak engine #176 (P42DC) rounds the corner at Tolland, Colorado and will soon enter the Moffat Tunnel in the Colorado Rockies.

The California Zephyr runs through Plainview, Colorado after freezing fog and falling snow creates a winter wonderland on the Moffat Tunnel Sub.

Amtrak engine #176 (P42DC) leads the California Zephyr through Tolland, Colorado on the Moffat Tunnel Sub.