Tour The Vineyard Watered by Daily Earthquakes

May 14 (Bloomberg) -- California's wine region is usually associated with Napa Valley. But many are surprised to learn that California's oldest winery, DeRose, is located more than 150 miles south of Napa Valley. Even more shocking: The vineyard is situated directly above the San Andreas Fault, which just happens to be splitting the main building in two. In this episode of "Secret Valley," Bloomberg Businessweek's Ashlee Vance tours the vineyard and learns how earthquakes can impact agriculture. (Source: Bloomberg)

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