英文關鍵字
america
american
arch
arches
balanced
beautiful
beauty
blue
boulder
desert
double
eroded
erosion
formation
formations
fragile
geological
geology
landmark
landscape
landscapes
monument
mountain
mountains
national
nature
north
orange
park
peak
red
rock
sandstone
scenic
sedimentary
sky
southwest
states
summit
tourism
travel
united
utah
valley
view
western
window