The scientists in this study wanted to answer two questions: (1) How many people in the United States are projected to participate in four backcountry and wilderness activities in 2060 compared with participation in 2008? (2) On average, how many days per year is each person projected to participate in 2060 compared with the number of days per year in 2008? Topics: Backcountry, Backpacking, Camping, Hiking, National Wilderness Preservation System, Prediction, Recreation, Survey.