It is theorized that, after the big Loma Prieta quake, much of the strain on techtonic plates in the SF Bay Area is focused on the Hayward Fault, which runs under Oakland.
89 posted on 06/03/2016 7:33:01 AM PDT by T-Bone Texan
(Don't be a lone wolf. Form up small leaderlesss cells ASAP !)