Freezing fog and light snow shrouds Tunnel #4 at Plainview, Colorado as UP 8530 (SD70ACe) leads the Grand Junction to Denver freight down the Moffat Tunnel Sub.

UP 4533 (SD70M) leads an officer special passenger train under Highway 93 and towards Rocky, Colorado.

BNSF 5866 (ES44AC) exist Tunnel #29 at Pinecliffe, Colorado and will continue down the mountain towards Denver on the Moffat Tunnel Sub.

A distant horn signaled the pending arriving of BNSF 5866 (ES44AC) at Pinecliffe, Colorado, and within seconds the freight train rounded the corner and headed into Tunnel #29.

The Rocky Mountaineer runs through Tunnel #29 at Pinecliffe, Colorado.

The California Zephyr 6 train runs past the Union Pacific's North Yard and the BNSF intermodal facility in Denver on its way to Union Station.

The Colorado Railroad Museum has a great diverse collection, including a standard gauge Denver & Rio Grande Western GP30, a Galloping Goose, and a GE 55 Ton switcher seen here getting ready to dep... (more)

UP 6657 (AC4400CW) runs through heavy snow on the Moffat Tunnel Sub as it heads towards Rollinsville, Colorado.

A spring storm is dropping a foot of wet snow on the Moffat Tunnel Sub as UP 6657 (AC4400CW) runs through Rollinsville, Colorado.

Heavy snow from a spring storm is falling on the Moffat Tunnel Sub as UP 6657 (AC4400CW) runs through Tolland, Colorado.

Wet, heavy snow from a spring storm is falling on the Moffat Tunnel Sub as UP 6657 (AC4400CW) runs towards Pinecliffe, Colorado while leading a loaded coal train for Denver.

UP 6657 (AC4400CW) runs past South Boulder Creek as it heads towards Rollinsville, Colorado in heavy snow on the Moffat Tunnel Sub.

A winged UP 6657 (AC4400CW) leads a loaded coal train in heavy snow through the signals at Rollinsville, Colorado as it heads down the mountain towards Denver.

The California Zephyr was three hours late getting into Denver this morning due to the tornadoes in Nebraska, and then the crew and passengers had to deal with heavy snow as they ran into the Colo... (more)

Heavy snow is falling as the California Zephyr runs past the signals at west Pinecliffe, Colorado as it heads higher into the Colorado Rocky Mountains.