Ключевые слова: acid, adventure, asia, asian, crater, danger, dangerous, east, exotic, gas, heat, hiking, ijen, indonesia, island, java, journey, kawah, lake, landscape, lava, light, mineral, mist, mountain, natural, nature, people, person, polution, power, rock, scenic, smoke, sulfur, sulfuric, sulphur, sunrise, tourism, travel, view, volcano, worker, yellow,