Amtrak No. 5, the westbound California Zephyr, approaches Big 10 Curve west of Rocky, Colorado, on a sunny February 9, 2015.

The outbound California Zephyr is running a bit tardy out of Chicago as it barrels through suburban Downers Grove.

Amtrak No. 5 leaves Rocky, Colorado, on clear blocks, even though Union Pacific MNYRO climbs through Tunnel 1 in the background ahead of the passenger train. Amtrak is approaching milepost 19 and ... (more)

With storms passing to the east, Amtrak No. 5, the California Zephyr, traverses rugged Little Gore Canyon between Azure and Radium, Colorado, on August 4, 2014.

The westbound California Zephyr cruises along the Colorado River on the Dotsero cutoff. It is late winter, with snow still lingering at the higher elevations. Olympus OM-2n, 50mm f/1.4, Kodachrome... (more)

With Amtrak P42DC No. 145 in “Heritage Phase III” paint on the lead, train No. 5, the California Zephyr, crosses the mouth of Coal Creek Canyon and approaches Tunnel 1 east of Plainview, Color... (more)

Amtrak's California Zephyr train No. 5 prepares to depart the Rio Grande depot in Salt Lake City on Dec. 12, 1998.

Amtrak's train # 5 the "California Zephyr" from Chicago to Emmeryville (San Francisco) near tunnel # 1 of UP's Moffat Tunnel Subdivision in the Coal Creek Canyon.

P42 # 118 and 41 are pulling Amtraks train # 5 "California Zephyr" up the 2.0 % grade to the front range of the Rockies and the Moffat tunnel. The train is going through little 10 curve/... (more)

Amtrak’s California Zephyr, curves westbound through Tunnel 40 in scenic Little Gore Canyon west of Azure, Colorado, on August 21, 2014.

After pitch hitting for an ailing GE P40DC on Amtrak's California Zephyr, a Cotton Belt GP60 awaits the Roper Yard hostlers, parked at the Rio Grande passenger station in Salt Lake City the mornin... (more)

The sun rises over the Great Plains and the city of Denver on the morning of January 25, 2007, as Amtrak’s westbound California Zephyr climbs the grade out of Leyden, Colorado, at the beginning ... (more)

The various connections between Superliners are caked with snow and ice.

The crew changes on the California Zephyr at Grand Junction. Note the old water cars in the background.

Amtrak train no. 5, the California Zephyr winds around curves above Big Ten and heads into tunnel 1 on the climb out of Denver up the Front Range of the Rockies. At this time Amtrak was attempting... (more)