Amtrak train 5, the westbound California Zephyr, approaches a tunnel near Radium, CO on November 9, 2017.

Amtrak train 5, the westbound California Zephyr, passes through a short tunnel in Gore Canyon outside of Kremmling, CO on November 9, 2017.

Amtrak train 5, the westbound California Zephyr, cruises along beside the Colorado River in Glenwood Canyon as it approaches its station stop in Glenwood Springs, CO on a beautiful November 9, 201... (more)

Amtrak 5 approaches Tunnel 18 on a late afternoon in early autumn.

On September 30, 2017, the mountain valley surrounding Tolland, Colorado, is painted in the colors of autumn as Amtrak’s California Zephyr heads westbound towards the Moffat Tunnel.

Amtrak 182 leads the California Zephyr west through Western Springs.

Amtrak’s westbound California Zephyr passes through 294-foot Tunnel 39 along the Colorado River in Little Gore Canyon between Azure and Radium, Colorado, on the afternoon of August 3, 2014.

At dusk on a winter's evening, Amtrak No. 5 departs Galesburg, IL, for the West Coast.

Amtrak 168 leads the westbound California Zephyr west around the curve at Light Road near Oswego.

The westbound California Zephyr is running on time on this Tuesday and slows for the stop at Glenwood Springs. A presence of large organized tours in this region is noticeable with the coach bus p... (more)

Amtrak 13 leads the California Zephyr on the yard bypass track near Galesburg, IL.

Bending around a gentle curve along the meandering Colorado River is Amtrak No. 5, the westbound California Zephyr, west of Radium, Colorado, on November 7, 2012. The train has just exited Red Gor... (more)

In a heavy rain, Amtrak No. 5, the San Francisco Zephyr, makes its way through the curves at Yuba Gab. Note that the track the train is on--which runs around the tunnel--is no longer there.

Sleeping car passengers have their cameras at the ready as the westbound California Zephyr climbs into the Sierra Nevada Mountains and over Donner Pass.

California Bound Only 5 hours late Amtrak 5 “California Zephyr” is polishing the rails as the passing train heads west through the soybean fields of Cameron, Il on the BNSF Ot... (more)