Download or read book A History of Visibility Protection written by John Francis McCarthy and published by . This book was released on 2001-08 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many national parks and wilderness areas, particularly those in the Southwestern United States, are known for their unique and beautiful scenery. Millions of people visit these areas each year to view their spectacular scenic vistas. In 1977, Congress made the protection of visibility in these areas a national priority. Part II of this article provides an overview of the history and purpose of visibility regulation, and Part III describes the scientific basis for such regulation. Part IV discusses the early years of visibility protection; Part V evaluates visibility protection in the 199Os; and Part VI discusses EPA's recent efforts at dealing with the visibility problem.