The California Zephyr backs into Denver's Union Station between the myriad of catenaries that support RTD's commuter rail system.

The Southwest Chief runs the S curves south of Trinidad, Colorado.

The Southwest Chief makes good time running south of Wagon Mound, New Mexico

The Southwest Chief leaves Wagon Mound, New Mexico behind and splits the semaphore signals at Levy.

Pastel colors of dawn emerge from the darkest hours of the night as Amtrak’s westbound California Zephyr bolts across a fill at 79 miles per hour at Barr, Colorado, on January 6, 2011.

The Southwest Chief runs towards Raton, New Mexico as it heads south from Trinidad, Colorado.

The California Zephyr runs through the trees at Tolland, Colorado as it heads to the Moffat Tunnel.

Amtrak engine 171 (P42DC) leads the California Zephyr with no ditch lights through Keenesburg, Colorado.

A pink sunrise glints off the side of the California Zephyr as it splits the signals near Keenesburg, Colorado.

The California Zephyr runs in the freezing snow as it heads east through Fort Morgan, Colorado.

Bringing up the rear of Amtrak’s 10-car California Zephyr is heavyweight private car Santa Fe No. 33, the “Redwood Empire,” built by Pullman in 1923 for the Santa Fe as business car No. 33. ... (more)

Amtrak’s eastbound California Zephyr descends on the two percent grade of the Moffat Tunnel route after rounding Big 10 Curve between Eisele and Rocky, Colorado, on the afternoon of May 4, 2018.... (more)

Amtrak's recently-painted Phase IV heritage P42 no. 164 makes an appearance on the point of a pleasantly-late Crescent as it leans into the s-curve at Red Lane on a bright summer morning.

AMTK 14 leads the northbound Coast Starlight along Klamath Lake, OR. Mt. Shasta in the background.

Amtrak's recently-painted Phase IV heritage P42 no. 164 makes an appearance on the point of a pleasantly-late Crescent as it pokes into the only morning southbound light here at Red Lane. Kudzu ha... (more)