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There are more than 4 million acres of classified and de facto wilderness on National Forest lands in Washington and Oregon, plus two National Parks with thousands of acres that may soon be classified as wilderness.This view is looking northwest up the Entiat River into the Glacier Peak Wilderness.users, although both might hold purist attitudes and values.In addition, the opportunity for wilderness experience is affected by income, vacation time, etc.Mills, Archie U. Back country and the hand of man.Paper presented at the national meeting of the American Society of Range Management, Seattle, Wash., February 1967. Self-registration of all users is now required on allForest Service wilderness and primitive areas in Wash- ington and Oregon.Tlie self-registration system pro- vides better estimates of use and contributes to the safety of users.Tfiis study is based on a sample of 2,000 visitors drawn from self-registrations in the Eagle Cap, Glacier Peak, and Three Sisters Wilderness Areas.from a random sample of cards deposited at the 76 self-registration stations located within the three areas.Tests of the effectiveness and representativeness of the self-registration system suggest that about 75 percent of all wilderness visitors register, with the nonresponse concentrated among horseback riders, fishermen, hunters, solitary visitors, and frequent or long-time visitors to the area(Wenger 1964a; Wenger and Gregersen 1964).Conversion factors have been computed to account for the under-representation of such Wilderness users are typically young to middle-aged adults, but older users are frequently encountered.Hikers near Cascade Pass in the Glacier Peak Wilderness.
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