UP GP40X and Amtrak 321 and 322 depart Denver Union Terminal with the westbound San Francisco Zephyr.

Light snow has iced the rocks in Tolland, Colorado as BNSF 5919 (ES44AC) shoves a freight east on the Moffat Tunnel Sub.

BNSF 5919 (ES44AC) muscles a freight past a snowy, fast-flowing Boulder Creek at Tolland, Colorado.

Snow is falling on the Moffat Tunnel Sub as BNSF 8443 (SD70ACe) shoves a freight past the Cold War Horse statue, erected as a caution to the memory of the nearby Rocky Flats defense facility which... (more)

BNSF 5146 (Dash9) emerges from the east portal of the Moffat Tunnel and into snow as it heads through Tolland, Colorado.

Amid a -36F wind chill, passengers disembark in the Polar Bear Capital of the World.

Heavy snow falls on UP 7789 (C45ACCTE) as it leads a freight west on the Moffat Tunnel Sub through Tolland, Colorado.

From the bird's eye view, the lakes are gradually getting rid of the frozen ice layers. Fields seem to be colourless, but luckily passing train bring always some colour, like the one we see here. ... (more)

An Eastbound CPKC Intermodal skirts the bluffs along Lake Superior

A spring snowstorm in the Colorado High Country drop snow on UP 5306 (ES44AC) as it runs through Tolland on the Moffat Tunnel Sub.

Light snow falls in Tolland, Colorado as BNSF 7073 (ES44AC) shoves the Provo-to-Denver train into the Winter Wonderland of flocked pine trees on the Moffat Tunnel Sub.

The North bound Texas Eagle getting right back up to track speed after a stop at Joliet.

CPKC Railway's eastbound intermodal train from Edmonton, Alberta to Montreal, Quebec climbs out of the Lake Superior basin at mile 50 of the Heron Bay Subdivision between Pringle and Heron Bay sid... (more)

Snow is falling in Tolland, Colorado as UP 7789 (C45ACCTE) leads a freight west on the Moffat Tunnel Sub.

UP 5753 (AC4400CW-CTE) leads a rail train out of a snowy Tunnel #29 at Pinecliffe, Colorado and runs east on the Moffat Tunnel Sub.