页面
第 7 页CC0 1.0（公有领域）
The Landscape Stewardship Corps puts interns aged 18 to 30 in 26-week stints on historic and cultural landscapes, learning trades such as horticulture, arboriculture, masonry and carpentry.
第 14 页CC0 1.0（公有领域）
Barry Richardson started volunteering at Hot Springs National Park in 1999. More than 7,000 hours later he still does a bit of everything — and once touched a snake for the first time.
