英文關鍵字
ancient
attraction
below
cave
caving
column
crystal
dark
darkness
dimcay
earth
enjoy
erosion
fenced
formation
geological
geology
girl
grotto
growth
hall
inside
interior
landscape
light
limestone
look
mineral
mountain
national
nature
old
railing
rock
speleology
stalactite
stalagmite
stone
structure
subterranean
tourism
tourist
travel
turkey
underground
view
wall
water
wet
woman