This is America(14)——黄石国家公园(五)
This is America(18)——早安,波卡特洛!
This is America(15)——大提顿山
his is America(20)——锡安国家公园
This is America(22)——羚羊谷
his is America(21)——马蹄湾
This is America(23)——直升机上看大峡谷
This is America(24)——老鹰崖和蝙蝠岩
This is America(25)——华莱派牧场
This is America(26)——胡佛水坝和米德湖