Ключевые слова: blue, canyon, cold, color, crater, desert, destination, earth, ecology, empty, energy, eruption, famous, gas, geology, geothermal, geyser, hot, imaginative, italy, landscape, lava, mountain, naples, napoli, natural, nature, nobody, park, power, pozzuoli, region, rock, sky, smell, smoke, solfatara, spring, sulfur, thermal, tourism, valley, vapor, volcanic, volcano, water, white,