Ключевые слова: antarctic, arctic, arctic circle, askja, caldera, chemical, colorful, crater, dreki, earth, elements, environment, formation, geography, geology, geothermal, glacier, global warming, highland, hiking, hiking trail, holiday, ice, iceland, icelandic, journey, landscape, lava field, magma, mountain, national park, nature, north, outdoor, panorama, panoramic, polar, rock, sky, summer, tour, travel, trekking, trip, vacation, vatnajokull, viti, volcanic, volcano, world,