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Yosemite National Park, with donors' help, expands at-risk youth programs
San Jose Mercury News YOSEMITE NATIONAL PARK — On a steep hill in Mariposa Grove, with enormous sequoias towering overhead, 12-year-old Marcella Tapia paused for a break. A dozen other kids, dressed in "Yosemite Volunteer" yellow vests, dug and tugged and pulled out … Yosemite youth programs |