Ключевые слова: active, activity, berca, boiling, bubble, burst, caucasian, circle, cone, crater, crust, dirtied, dirty, dome, earth, erupt, erupting, eruption, exploding, famous, flow, gas, gaseous, geology, grey, ground, land, landmark, landscape, live, mountain, mud, national, natural, nature, oil, paclele mari, paclele mici, pressure, rock, rocky, romania, romanian, temperature, tour, volcanic, volcano, volcanoes,