Here you see the San Andreas Fault in action. Super slo-mo, but action nonetheless.
This is Wallace Creek, a (typically) bone dry shadow of a creek in the Carrizo Plain. At one point (back when it was still in diapers or perhaps just learning how to sound-out the words), Wallace Creek ran straight-ish. And then the earth shook and Wallace Creek moved a little. A couple hundred years later the earth shook again, and again, Wallace Creek moved a little. Over and over, every couple hundred of years.
The sign post says that eventually this spot will be in the same zip code as the golden gate bridge.