On a late spring day in Colorado, Amtrak’s westbound California Zephyr zips through Tunnel 29 and crosses South Boulder Creek just east of Pinecliffe on the morning of May 25, 2017.

A westbound Union Pacific empty coal train works its way upgrade thru Tunnel 29. The train is approaching Pinecliffe, Colorado. The train has been steadily climbing along South Boulder Creek sin... (more)

A pair of BNSF "Heritage 1" painted C44-9W's lead another Dash 9 on the Provo-Lincoln manifest train down the 2-percent grade in Pinecliffe, Colorado on May 21, 2018.

7 motors head a empty coal train towards the West Slope to load coal. This Union Pacific empty is moving the power for the return loaded trip all on head-end in the same manor the Rio Grande did f... (more)

Rio Grande EMD SD40T-2 “Tunnel Motor” No. 5401 is on the point of Union Pacific’s Denver to Salt Lake City manifest Freight on April 2, 2001. It is working its way past the east end of Cliff... (more)

A BNSF manifest climbs upgrade westbound out of Tunnel 26. The train is threading its way along the 2% grade that hugs South Boulder Creek. The heavy train has 5 locomotives... A colorful group ... (more)

The Thunder Rolls! A westbound BNSF manifest screams west thru Tunnel 29, as a rare quick moving morning thunderstorm moves on my position... The front of the train twists into a 10 degree... (more)

Amtrak’s westbound California Zephyr crosses South Boulder east of Pinecliffe, Colorado, on a wintery March 28, 2016. Trailing lead GE P42DC No. 81 is “phase III heritage” P40DC No. 822.

Amtrak 3 leads the California Zephyr westbound at Tunnel 29. This location is where the railroad exits South Boulder Canyon.

In the afternoon sunlight just east of Cliff Siding, Ferromex ES44AC #4691 leads a colorful consist on the BNSF Provo, UT to Denver, CO manifest on December 30th, 2017.

Eastbound coal loads roll through Pinecliffe, CO. A short bridge over South Boulder Creek and Tunnel 29 are just ahead.

As seen from California Zephyr car, the Silver Lariat, we look back at the Silver Rapids and Silver Solarium as they traverse the Colorado Rockies near Pinecliffe on the rear of Amtrak C... (more)

Amtrak #6, the eastbound California Zephyr, eases out of Tunnel 29.

Amtrak’s California Zephyr winds westbound through Tunnel 29 just east of Pinecliffe, Colorado, on the morning of May 25, 2017.

Union Pacific EMD SD70ACe No. 8550 leads a westbound coal empty through Tunnel 29 just east of Pinecliffe, Colorado, on the morning of May 13, 2017.