It lies southeast of Tejon Ranch , one of California 's oldest working ranches and site of several large proposed new communities . It lies directly on a section of the San Andreas Fault that is ' overdue ' for a large earthquake , and that produced the 1857 Fort Tejon earthquake , one of the largest known earthquakes in California at an estimated 7.9 magnitude
1857 Fort Tejon earthquake
1857 Fort Tejon earthquake
Neenach, California