英文關鍵字
volcano
sulfur
crater
lake
mining
mountain
acid
indonesia
landscape
ijen
nature
java
gas
landmark
kawah
rock
smoke
volcanic
asia
mist
sky
travel
steam
scenic
sulphur
tourism
miner
adventure
fog
danger
active
yellow
mine
natural
fume
toxic
英文關鍵字
volcano
sulfur
crater
lake
mining
mountain
acid
indonesia
landscape
ijen
nature
java
gas
landmark
kawah
rock
smoke
volcanic
asia
mist
sky
travel
steam
scenic
sulphur
tourism
miner
adventure
fog
danger
active
yellow
mine
natural
fume
toxic