Ключевые слова: active, berca, bubble, crack, danger, destination, dirty, dramatic, dry, earth, environment, eruption, europe, flow, gas, geography, geology, gray, ground, heat, hill, hot, land, landscape, liquid, mari, mineral, mountain, mud, muddy, natural, nature, outdoor, park, phenomenon, rare, reservation, romania, soil, strange, sulfur, texture, textured, tourism, travel, volcano, water,