RTD 4034 (Hyundai Eagle P3) leaves Denver Union Station behind and will run on the A-Line to Denver International Airport.

BNSF 2530 (GP39-3) leads a short freight past the Valmont Power Plant in Boulder, Colorado.

UP 8834 (SD70AH) rounds the corner at Crescent, Colorado as it leads a train down the Moffat Tunnel Sub.

With the Sangre De Christo Mountains serving as a backdrop, the AAPRCO San Juan Limited ascends the west slope of Veta Pass.

UP 6168 leads an oil train past the Winter Park ski resort as storm clouds drop light snow

Light snow is falling as Amtrak engine 23 leads the Winter Park Expres Ski Train back to the platform after waiting at Fraser during the day.

Light snow is falling as Amtrak engine 174 in the new Phase VII paint scheme leads the Winter Park Expres Ski Trainl at the Winter Park Resort

Snow is falling as Amtrak engine 82 leads the California Zephyr 5 train out of the west portal of the Moffat Tunnel at the Winter Park Ski Resort

Amtrak heritage unit #161 leads the California Zephyr 6 train through Winter Park Ski Resort

The Winter Park Express Ski train heads towards Plainview, Colorado on its way into the Colorado Rocky Mountains.

The California Zephyr runs through the signals at Crescent, Colorado.

UP 8009 (ES44AC) is about to disappear into thick fog at Blue Mountain, Colorado.

UP 7104 (AC4400CW) leads an oil train down the hill from Tunnel #1 at Plainview, Colorado.

Storm clouds are dropping snow in the Rocky Mountains as UP 2698 (AC4400CW) runs through Leyden, Colorado on its way to Denver.

The BNSF Local to Hudson Colorado makes its run back to Denver as the last licks of sunset light highlight the clean orange paint on both motors.