Ключевые слова: barren, bubble, caldera, cracked, crater, dangerous, eruption, field, fissure, gas, geology, geothermal, ground, hole, hot, iceland, krafla, landscape, lava, lifeless, magma, minerals, mountain, multicolored, nature, panorama, panoramic, remote, rift, rock, rocks, sulfur, system, volcanic, volcano, wide,