Ключевые слова: above, acid, active, adventure, aerial, air, ash, blue, caldera, cloud, cone, crater, danger, dawn, drone, dusk, east, eruption, fly, fog, gas, heat, high, hill, ijen, indonesia, java, kawah, lake, landmark, landscape, mine, mist, morning, mount, mountain, muzzle, peak, semeru, sky, smoke, steam, sulfur, sulphur, sunrise, sunset, surabaya, volcanic, volcano,