Maybe you would like to take a trip and get away from the pollution of the cities. You think that going to the Shenandoah Valley would be a nice refreshing experience. The Shenandoah Valley has the Allegheny Mountains as the western border, the Blue Ridge Mountains as the eastern border, and the Massanutten Mountain range in the middle. These mountain ranges are stunningly beautiful. So, you hop in your car and off you go. As you are driving down I-81, you notice that when you reach a certain point in your trip, your eyes start itching and burning, you start sneezing and coughing. Why? The soil in The Valley is.

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