英文關鍵字
activity
background
basin
blowing
blue
environment
gas
geothermal
geyser
hell
hot
jigokudani
kamchatka
lake
landmark
landscape
lassen
lets
melts
mountain
national
natural
nature
nobody
park
power
scenic
smoke
snow
snowy
spring
springs
steam
sulfur
summer
surroundings
thermal
tourism
travel
trees
usa
valley
vent
volcanic
volcano
warm
water
winter
yellow