英文關鍵字
attraction
bacteria
beautiful
boil
energy
erupting
eruption
explosion
extremophile
fountain
geologic
geology
geothermal
geyser
geysir
golden
hot
iceland
icelandic
natural
nature
power
pressure
splash
spray
spring
springs
steam
strokkur
sulfur
tectonic
thermal
tourism
tourist
travel
vapor
volcanic
volcano
water