Craters Of The Moon National Monument and Preserve Air Quality

Clean air allows views of sweeping panoramas of color and texture stretching over thousands of square miles of the Snake River Plain. Mountains as distant as the Grand Tetons in Wyoming (140 miles) are visible from the top of Inferno Cone on very clear days. Views of the expansive lava flows and the line of cinder cones along the Great Rift require clean air. Of course, clean air is also critical for the health of resident plants, animals and people.

While Craters of the Moon lies in one of the countries' cleanest air regions, many visitors do not see the clear vistas they expect. A haze often hangs in the air, and much of this haze is not natural: it is air pollution, often carried on the wind from distant coal-fired power plants and other industrial facilities.

The Craters of the Moon Wilderness Area is considered a Class I area under the Clean Air Act, which requires that the air receives the highest level of air quality protection. Consequently, Craters of the Moon National Monument participates in the National Park Service's comprehensive air resources management program, designed to assess air pollution impacts and protect air quality related resources.

The National Park Service operates monitoring instruments near the Monument's Visitor Center, which record concentrations of ozone, fine particles which effect visibility, and acid precipitation. These sites are part of national monitoring networks which record existing conditions, detect trends, and help in the development of predictive models for air quality used throughout the country.

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