Ключевые слова: beautiful, blackwhite, caldera, circle, crater, eruption, europe, famous, geology, geothermal, golden, grass, hill, hole, holiday, iceland, icelandic, krafla, lake, lakes, landmark, landscape, lava, magma, mountain, national, natural, nature, outdoor, rock, round, scenery, scenic, sky, summer, tourism, travel, turquoise, up view, viti, volcanic, volcanism, volcano, water,