Ключевые слова: acidic, active, asia, asian, crater, east, gas, ijen, indonesia, indonesian, island, java, lake, landscape, lava, mount, mountain, national, natural, nature, panorama, panoramic, park, scene, scenery, scenic, slope, smoke, southeastern, stratovolcano, tourism, toxic, travel, traveling, tropic, tropical, turquoise, view, volcanic, volcano,