Ключевые слова: adventure, bath, bathing, beautiful, blue, cave, cavern, dark, explore, famous, geology, geothermal, grjotagja, grotagja, heat, hidden, hot, iceland, icelandic, inside, lake, landscape, myvatn, natural, nature, nobody, north, pool, recreation, relax, relaxation, rock, secret, spa, spring, steam, thermal, volcanic, water, wellness, wilderness,