National Parks, National Legacy 美国国家公园 - 国家遗产

National Parks, National Legacy 美国国家公园 - 国家遗产

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© AP Images/Bob Brodbeck

© AP Images/John Heilprin

© AP Images/NPS, Gary Berdeaux

© AP Images/David Jordan

© AP Images/The Salt Lake Tribune, Judy Fahys

© AP Images/Charlie Tasnadi

© AP Images/Paul Hugus

© AP Images/Adventure Cycling Association, Dennis Coello

© AP Images/Durango Herald, Nancy Richmond

© AP Images/The Daily Inter Lake, Jennifer Demonte

© AP Images/Douglas C. Pizac

© AP Images/Paul Connors

© AP Images/Yosemite Concession Services, Keith Walklet