Ключевые слова: aquamarine, blue, caldera, color, colorful, crater, eruption, europe, famous, geology, grass, green, grimsnes, hole, hotspot, iceland, icelandic, kerid, kerith, lake, landscape, lava, magma, minerals, moss, natural, nature, nordic, opaque, red, round, sky, soil, south, summer, sun, tourism, turquoise, vivid, volcanic, volcano, vulcan, water,