Ключевые слова: asia, autumn, caldera, colorful, crater, environment, fall, famous, forest, green, ground, hokkaido, hot, hot spot, hot spring, japan, japanese, jigokudani, kattara, land, landscape, mineral, mountain, mountain side, natural, nature, noboribetsu, onsen, outdoors, red, ridge, river, rock, sign, sky, smoke, source, spring, steam, stone, stream, town, travel, valley, volcanic, volcano, warning, water, wild, yellow,