Holbrook in Navajo County, Arizona — The American Mountains (Southwest)
But clean air is extremely sensitive. In pre-industrial times, visibility fluctuated naturally depending on conditions of weather, wind, dust, and smoke. Today, visibility also is affected by man-made pollutants that reduce contrast, wash out colors, and render distant landscape features indistinct or invisible.
Most of these pollutants are fine particles of sulfates, organic matter, soot, nitrates, and soil dust from industry, farming, motor vehicles, forest fires, and other sources.
As in many rural western areas, sulfates, organic matter, and soot contribute almost equally to decreased visibility. The park's air quality equipment measures and monitors the amount of these fine particles in the atmosphere.
We can help improve air quality through carpooling, recycling, reducing use of electricity, and becoming involved in community air quality issues.
Location. 35° 4.892′ N, 109° 48.098′ W. Marker is in Holbrook, Arizona, in Navajo County. Marker can be reached from Petrified Forest Road, on the left when traveling east. Click for map. Marker is in this post office area: Holbrook AZ 86025, United States of America.
Other nearby markers. At least 8 other markers are within 3 miles of this marker, measured as the crow flies. Painted Desert Inn (approx. ¾ mile away); Badlands (approx. 0.8 miles away); A Gap in the Geologic Record (approx. one mile away); Early Explorers (approx. 1.1 miles away); The Painted Desert (approx. 1.3 miles away); Painted Desert / Finding Fossils (approx. 1.4 miles away); Painted Desert Community Complex Historic District (approx. 1.5 miles away); Route 66 (approx. 2.1 miles away). Click for a list of all markers in Holbrook.
Categories. • Natural Features • Notable Places •
Credits. This page originally submitted on , by Denise Boose of Tehachapi, California. This page has been viewed 296 times since then and 6 times this year. Photos: 1, 2, 3, 4, 5, 6. submitted on , by Denise Boose of Tehachapi, California. • Syd Whittle was the editor who published this page. This page was last revised on June 16, 2016.