硫黄
prefecture
acidic
ancient
bath
blue
flowing
gunma
healthy
hot
japan
japanese
kusatsu
landmark
mineral
natural
nature
onsen
outdoor
outside
relax
resort
river
row
sightseeing
source
spa
spot
spring
steam
stream
sulfur
sweat
tourist
town
tradition
traditional
travel
tray
vapor
warm
water
white
wood
yubatake