Ключевые слова: alternative energy, blowout, breakout, brimstone, crater, dark clouds, desert, dramatic, energy, eruption, force of nature, geothermal, geothermal energy, geothermal heat, geothermics, geysir, hverir, iceland, island, krafla, lava, magma, menacing, methane, myvatn, ominous, renewable energy, rocky, smoke, spouter, steam, steaming, storm, stormy, sulfur, sulphur, tectonic, tempest, threatening, tourist attraction, touristic, volcanic, volcanism, volcano,