Ключевые слова: active, activity, alternative, area, boardwalk, boil, colorful, crater, ecological, energy, environment, feature, fumarole, gap, geological, geology, geothermal, ground, gunnuhver, heat, hole, hot, iceland, icelandic, landmark, landscape, layer, mud, natural, nature, peninsula, power, renewable, resource, reykjanes, rock, rough, scenic, source, spring, steam, sulfur, sulfuric, terrain, trail, travel, vapor, vent, volcanic, water,