Ключевые слова: acid, asia, beppu, boiling, close up, danger, destination, environment, famous, flowing, fumarole, gas, geological, geology, geothermal, heat, hell, hot, japan, japanese, jigoku, kyushu, mineral, mud, natural, nature, oita, oita prefecture, onsen, outdoor, place, pool, smoke, spring, steam, sulfuric acid, sulphur, temperature, thermal, tourism, umi, unpleasant smell, volcanic, water,