Amtrak's southbound Coast Starlight eases by on the mainline at Ravenna in Soledad Canyon while on a Central Valley detour via Tehachapi Pass.

Lugging a train of potash empties for Trona, UP 7769 begins the downhill run to Palmdale, having just crested the top of Soledad Canyon at Vincent Hill less than a mile behind.

A pair UP ES44's are spliced by an SD9043MAC as they lead a northbound empty potash train up the former SP Saugus Line, caught blasting out of Tunnel 19 in Soledad Canyon.

An empty UP potash train heading for Mojave and, ultimately, Trona rounds the curve at the bottom end of Ravenna siding in Soledad Canyon.

With a late start out of Los Angeles, northbound Union Pacific train ZLCSE is working through Ravenna in Soledad Canyon on the former SP Saugus Line.

Near Vincent Hill, a southbound weekend Metrolink heads through Soledad Canyon on the former SP Saugus Line with a new MPI diesel providing today's power.

Union Pacific's Brooklyn trailers wind through the curves at Lang near the west end of Soledad Canyon. A grungy SP heritage locomotive is trailing last in today's consist.

UP 3939 leads the Brooklyn trailers down the Saugus Line at Aliso Canyon Rd.

Detouring Coast Starlight #14 heads up Soledad Canyon at Ravenna.

Looking west toward Canyon country on the former SP Saugus Line, Amtrak Superliners gleam in last light at Sand Canyon on a detouring Coast Starlight.

The sun begins to set as detouring southbound Amtrak train #11 drops into the Santa Clarita Valley at Sand Canyon on the former SP Saugus Line.

Less than a half hour of sunlight left as detouring southbound Amtrak train #11 rolls downgrade through Crown Valley in Soledad Canyon near the old SP siding location of Ravenna.

On a clear winter morning in the Santa Clarita Valley, the Los Angeles to Seattle intermodal makes good time as it climbs into Soledad Canyon on the former SP Saugus Line.

Dropping downgrade through the upper reaches of Soledad Canyon, southbound Amtrak train #11 passes through Acton on the former SP Saugus Line.

Approaching the small town of Acton, detouring northbound Amtrak train #14 hugs lower Soledad Canyon Road as the train nears the top of the grade.