硫黄
active
aggressive
brimstone
colorful
crater
dangerous
earthquake
eruption
fumarole
fume
fumy
geology
geophysics
geothermal
geothermic
hell
hostile
hostile environment
hot
island
landscape
lava
lifeless
mineral
mountain
nature
new zealand
scenery
scenic
seismic
spectacular
steam
stone
sulfur
thermal
tourism
travel
view
volcanic
volcanic rock
volcano
volcanology
white
white island
yellow