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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 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
The fault crosses the foothills near Greenspot Road:
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:
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 >
About the Author: Dan Robinson has been a storm chaser, photographer and cameraman for 33 years. His career has involved traveling around the country covering the most extreme weather on the planet including tornadoes, hurricanes, lightning, floods and winter storms. Dan has been extensively published in newspapers, magazines, web articles and more, and has both supplied footage for and appeared in numerous television productions and newscasts. He has also been involved in the research community, providing material for published scientific journal papers on tornadoes and lightning.
