Ключевые слова: adventure, asia, background, cliff, crater, danger, destination, environment, eruption, exploration, fog, gas, hiking, hill, holiday, indonesia, island, java, kawah ijen, lake, landmark, landscape, mist, morning, mount, mountain, national, national park, natural, nature, outdoor, park, peak, ring of fire, rock, season, smoke, steam, sulfur, summer, sunrise, sunset, tourism, trail, trail running, travel, trip, valley, volcanic, volcano,