英文關鍵字
united
states
missouri
river
us
route
90
south
dakota
chamberlain
bridge
archival
historical
america
travel
vintage
70s
tourism
retro
seventy
seventies
american
old
1970s
tour
gate
tourist
entrance
north
landscape
overlook
sandstone
pinnacles
mountains
summer
scenery
wilderness
attraction
famous
place
destination
mounts
national
park
usa
panoramic
eroded
natural
geology
scenic
peaks
1977