英文關鍵字
adventure
adversity
animation
avakas
boulder
canyon
cartoon
caution
cliff
clod
curve
danger
dangerous
deep
difficult
disaster
discovery
element
eroded
fall
fieldstone
geology
gorge
icon
illustration
land
landscape
layer
lump
motion
mountain
natural
nature
notch
obstruction
park
pass
range
ravine
ridge
risk
road
rock
rockfall
sign
stone
symbol
traffic
travel
tumble