Ключевые слова: active volcano, activity, adventure, asia, background, beautiful, cloud, crater, danger, dangerous, earth, east java, forest, geology, green, hill, ijen, ijen volcano, indonesia, island, java, lake, land, landscape, mineral, morning, mount, mountain, national, natural, nature, outdoors, park, peak, rock, season, sky, stone, sulfur, sulfur rock, sulfuric, sunrise, tourism, travel, trekking, view, virunga, volcanic, volcano, volcanoes,