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A closer look at an S.F. earthquake zone

The U.S. Geological Survey put up this week a virtual helicopter tour of Northern California's deadliest trigger point for earthquakes, the Hayward fault, via an extension to Google Earth.

The online tour resembles an aerial overflight from an altitude of a few hundred feet, according to a report in San Francisco Chronicle. People can see how close their home, work or favorite pizza joint is to the fault. Of course, it's better than the real thing.