BNSF 8281 (ES44C4) shoves a freight eastbound on the Brush Sub through West Tonville, Colorado.
BNSF 2828 (GP39-2M) sits in the new snow at the Longmont Depot until called upon to take a freight to Broomfield, Colorado.
The Winer Park Express Ski Train exits Tunnel #1 and runs through a very frosty Plainview, Colorado.
The California Zephyr has left Denver, Colorado and runs through Arvada on the Moffat Tunnel Sub.
RTD 4037 (Hyundai Eagle P3) commuter rail train arrives from Denver International Airport as it drops down from the elevated track north of Denver's Union Station.
A Union Pacific oil can train is seen from inside a rock formation at Crescent, Colorado.
It's the blue hour in Denver, Colorado as UP 6999 (AC4400CW) leads an oil can train towards the 36th Street Yard.
The snow is so deep that UP 8051 (ES44AC) pushes a wall of snow ahead of the train as it heads to Denver, Colorado on the Moffat Tunnel Sub.
UP 8051 (ES44AC) has emerged from the Moffat Tunnel into a heavy snow storm and will slowly lead an oil can train towards Denver, Colorado.
A visiting BNSF motors sits among the Union Pacific motors in the UP's 36th Street Yard in Denver, Colorado.
The California Zephyr runs through Arvada as it heads towards the Colorado Rocky Mountains on the Moffat Tunnel Sub.
The California Zephyr runs through the signals at West Tonville on the Brush Sub.
Amtrak's Winter Park Express Ski Train exits Tunnel 1 on a frosty morning as it runs passengers up the Moffat Tunnel Sub to the ski resort at the top of the Rocky Mountains.
Amtrak's Winter Park Express Ski Train runs through Leyden, Colorado at sunrise.
The Amtrak Winter Park Express ski train leaves Denver behind as it rounds Blue Mountain and heads into Coal Creek Canyon.
