Ключевые слова: action, adventure, africa, african, blue, boil, bubble, burn, caldera, climb, congo, crater, crater lake, dark, dawn, democratic republic of congo, dusk, explosion, fume, geology, heat, hike, hot, lake, lava, lava lake, magma, national park, nature reserve, night, nyiragongo, red, rwanda, science, steam, stone, tectonic, tourism, travel, uganda, virunga, volcanic, volcano,