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By participating in Mountain Watch's Visibility Reporting, you become an important part of understanding how haze pollution affects mountain views and the recreational experience. Volunteers provide their opinion of whether visibility on a hike through the Appalachian Mountains, from Maine to Virginia, was "acceptable" or "unacceptable." These observations provide resource managers with information on the value of clear views to the hiking public. Poor air quality in the eastern United States directly affects hikers and others who recreate outdoors. Haze pollution diminishes scenic views and can negatively affect respiratory and cardiovascular health. Here is how you can help: Simply hike to your favorite vista along a trail in the Appalachian Mountains, take a photo from your viewpoint, and record your opinion of the view. Email your photo, and send in the data sheet. It's that easy to contribute to real science that will help us understand how haze pollution affects mountain views.