Ключевые слова: active, asia, asian, caldera, cloud, crater, drum, east, east java, gas, ijen, indonesia, indonesian, island, java, javanese, kawah, metal, mount, mountain, mt, rock, smoke, south east asia, steam, sulfur, sulfuric, sulfurous, sulphur, sulphuric, sulphurous, vent, volcanic, volcano, yellow,