Ключевые слова: beli plast, bulgaria, cave, color, eastern rhodopes, europe, european, geological, geology, hill, kardzhali, kardzhali region, landmark, landscape, limestone, mountain, mushrooms, nature, outdoor, outside, panorama, park, prodigy, rhodopes, rock, rock formation, rock phenomenon, rodopi, sight, sightseeing, stone, stone mushrooms, summer, sunrise, sunset, the stone mushrooms, tour, tourism, tourist, travel, traveler, vacation, view,