If you live in Southern California, you’ll understand why this is my favorite Site. “Clicking on a region will take you to an enlarged relief map of the area, with local faults highlighted in a variety of colors,(Then Click on THAT MAP) and linked to pages detailing information about these faults”. Last Major etc. I Love This Stuff! I mean if you live here, you might as well be aware of what’s gone on beneath you in the past.
http://www.data.scec.org/faults/faultmap.html