UP 8639 (SD70ACe) shoves an oil can train through a very snowy Tolland, Colorado.

BNSF 6295 (ES44AC) runs through the snow and the trees between Tolland and Rollinsville, Colorado.

Heavy snow falls as UP 6657 (AC4400CW) leads an oil train through a corner at Tolland, Colorado, heading east on the Moffat Tunnel Sub.

A BNSF oil can gets ready to exit the Moffat Tunnel in a heavy snowstorm that dropped a foot of snow.

BNSF 6295 (ES44AC) runs through the snow towards Tolland, Colorado on the Moffat Tunnel Sub.

Rocky Mountaineer Railtours “Rockies to the Red Rocks” passenger train approaches Tolland as it climbs toward Colorado’s Moffat Tunnel on April 24, 2024.

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

A Union Pacific officer's special gets the green to enter the east portal of the Moffat Tunnel at Tolland, Colorado.

UP 4533 (SD70M) leads an officer's special towards the Moffat Tunnel, passing the trusty designated chase vehicle dubbed "The F-Unit".

A Union Pacific Officer Special runs towards the evening sun as it gets ready to enter the Moffat Tunnel at Tolland, Colorado.

Snow in Colorado is spring isn’t unusual, and another cloaked the Front Range on April 19, 2024. The next day, BNSF’s Provo to Denver priority freight descends Union Pacific’s Moffat Tunnel ... (more)

BNSF 6295 (ES44AC) exits the east portal of the Moffat Tunnel and runs into a snowstorm that is dropping four inches of snow on the Moffat line.

BNSF 6295 (ES44AC) leads a freight down the mountain between Tolland and Rollinsville, Colorado.

Heavy snow is falling at Tolland, Colorado, obscuring the east portal of the Moffat Tunnel from which UP 6864 (ES44AC) has just emerged.

BNSF 6295 (ES44AC) leads the Provo to Denver train out of the east portal of the Moffat Tunnel and into light snow falling over Tolland, Colorado.