英文關鍵字
bleached
calcite
canyon
cliffs
flowing
forest
geology
green
landmark
landscape
mountain
mountains
movement
national
nature
outdoor
park
pines
rapids
river
scenic
springs
stone
stream
travel
trees
view
water
white
yellowstone
英文關鍵字
bleached
calcite
canyon
cliffs
flowing
forest
geology
green
landmark
landscape
mountain
mountains
movement
national
nature
outdoor
park
pines
rapids
river
scenic
springs
stone
stream
travel
trees
view
water
white
yellowstone