英文關鍵字
boil
bubble
circle
cloudy
energy
erupt
eruption
europe
geological
geothermal
geyser
golden
hot
iceland
island
land
landscape
nature
north
polar
power
powerful
renewable
rock
spray
stone
strokkur
thermal
tourism
volcanic
volcano
water
wild
英文關鍵字
boil
bubble
circle
cloudy
energy
erupt
eruption
europe
geological
geothermal
geyser
golden
hot
iceland
island
land
landscape
nature
north
polar
power
powerful
renewable
rock
spray
stone
strokkur
thermal
tourism
volcanic
volcano
water
wild