Amtrak's eastbound California Zephyr snakes along the Colorado River through Yarmony in Eagle County, CO as the sun pokes through the afternoon's rolling clouds.

Early in the morning, Amtrak No. 6 meets a Rio Grande helper at Castilla.

Moments after sunset, Amtrak #6 led by Amtk 817 heads eastbound at Commerce City, CO, on Sept 1, 2019.

The eastbound California Zephyr is rounding the final curve in Ruby Canyon, and in a few moments will duck through the short Ruby Tunnel.

Amtrak’s California Zephyr cruises downgrade at Coal Creek Canyon east of Plainview, Colorado, on the afternoon of April 14, 2019, led by “Phase II heritage” GE P42DC No. 130.

Running 8 hrs 47 mins late, Amtrak 155 & 163 lead the eastbound California Zephyr toward its next stop in Hastings, Nebraska.

Amtrak's eastbound 'California Zephyr' descends into Coal Creek Canyon 23 rail miles away from its next stop at Denver.

Amtrak’s eastbound California Zephyr is led by “Phase II heritage” P42DC No. 130 as the passenger train descends the grade at Coal Creek Canyon east of Plainview, Colorado, on the afternoon ... (more)

Dwarfed by the Rockies overhead, the eastbound California Zephyr exits the lengthy darkness of Moffat Tunnel.

Eastbound Amtrak #6 passes Green River (UT) area on the way to Chicago.

Amtrak’s eastbound California Zephyr quietly crosses the large earthen fill leading down to Tunnel 16 at South Draw as the silvery passenger train catches some sunlight playing tag with clouds w... (more)

Three “elephant-style” GE P42DCs power Amtrak’s eastbound California Zephyr into the horseshoe curve at Coal Creek Canyon just downgrade of Plainview, Colorado, on the afternoon of June 24, ... (more)

Amtrak’s eastbound California Zephyr emerges from the shadowed 75-foot bore of Tunnel 29 just east of Pinecliffe, Colorado, on the afternoon of September 15, 2018.

The California Zephyr has just exited the Thistle Tunnels

BNSF 6107 leads a very late California Zephyr for a fast station stop at Princeton.