Ключевые слова: acidic, acidity, ancient, area, asia, asian, bath, gunma, health, healthy, hot, hot spring, hotel, japan, japanese, kusatsu, landmark, landscape, mineral, mineral water, natural, nature, onsen, open, outdoor, outside, park, relax, reral, resort, rock, rravel, rural, ryokan, sightseeing, source, spa, spring, steam, stone, sulfur, sulphur, tradition, travel, vapor, water, wood, yubatake, yumomi,