Catalina Highway
Pollution bathes Tucson, Arizona, as seen from the Catalina Highway, aka Mt. Lemmon Highway, General Hitchcock Highway, Sky Island Byway, and Arizona Forest Highway 39.
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Pollution bathes Tucson, Arizona, as seen from the Catalina Highway, aka Mt. Lemmon Highway, General Hitchcock Highway, Sky Island Byway, and Arizona Forest Highway 39.
