 The big bear quake, 6.8. How can that be? Well, a fault line that is ready to fail doesn't need much to nudge it into action. If you have your palms pushed together with a sheer couple set up between them, you know, it's ready to fail. And somebody comes and bumps your elbow, it's going to flip. That's right. It doesn't take much. If you had a dump truck with the sand in there filled up at the angle of repose, about 34 degrees.