Southern California is an epicenter for earthquakes, with an estimated 10,000 small temblors hitting the region every year. Now, there’s a discovery of a new, potentially significant fault line located 120 miles east of San Diego. It runs parallel to the notorious San Andreas fault, said Neal Driscoll, professor of geology and geophysics at Scripps Institution of Oceanography at UC San Diego. “It’s located in the Salton Sea along the eastern margin,” said Driscoll. “This fault has a component of what we call ‘dip-slit.’ It has a component of extension, where the plates are pulling apart, as well as a component of strike-slip, like the San Andreas,” Driscoll explained.