What is being passed off as the 'San Andreas Fault' are large, unsupported chambers that are in the process of collapsing. When the BIG ONE finally hits, many scientists in the know believe that most of California will break off like a cold Hershey bar and slide into the ocean! (it is postulated by some that an ancient land-mass which some believe may have been connected to what is now California, broke off and sunk into the ocean during an ancient cataclysm