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California's San Andreas Fault

San Andreas Fault, Part 6: San Bernardino

By DAN ROBINSON
Storm Chaser/Photographer
25 Years of Storm Chasing
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GALLERY: All San Andreas Fault photos in gallery format

After descending the mountains from Cajon Pass, the San Andreas Fault cuts through the northern edge of the San Bernardino metro area. The fault zone crosses hundreds of streets, washes, power lines and residential backyards. The straight-edged foot of the mountains marks the location of the fault trace, making it easy to locate visually.

Map of San Bernardino, California
Map of this segment of the tour

San Bernardino, California

Here are a few examples of where the fault - quietly, for the moment - crosses below residential streets in the North Park, Del Rosa and Highland neighborhoods:

San Andreas Fault zone in San Bernardino, CA
San Andreas Fault zone in San Bernardino, CA

San Andreas Fault zone in San Bernardino, CA
San Andreas Fault zone in San Bernardino, CA

San Andreas Fault zone in San Bernardino, CA
San Andreas Fault zone in San Bernardino, CA

San Andreas Fault zone in San Bernardino, CA
San Andreas Fault zone in San Bernardino, CA

The fault crosses the foothills near Greenspot Road:

San Andreas Fault zone at San Bernardino, CA
click for larger version

Mentone, California

On the northeastern edge of the metro, the fault crosses Mill Creek Road near the mouth of the canyon. This view looks southwest:

San Andreas Fault zone at Mentone, CA
click for larger version

It is here that the fault begins traversing the San Bernandino Mountains among Little San Gorgonio Peak. There are no public non-4WD roads available to access to the fault trace in this stretch, so we'll jump on I-10 and head east around the mountains. As we do, we'll get a distant view of the fault zone in the high terrain:

San Andreas Fault zone at San Bernardino, CA
click for larger version

The next place we can regain direct access to the fault trace is along Twentynine Palms Highway (US 62) toward Yucca Valley, so we'll head that way to continue our tour. Continue to Part 7 >

< Previous: Part 5 | NEXT: Part 7: Desert Hot Springs & Coachella Valley >

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