Ключевые слова: balkans, beautiful, beauty, belogradchik, bulgaria, bulgarian, canyon, cave, cavern, central, cliff, climbing, color, colorful, day, destination, development, europe, famous, forest, formation, fortress, fossil, gods, gorge, high, hills, landmark, landscape, limestone, mountain, mountaineering, natural, nature, outdoors, park, passage, pattern, places, red, ridge, rocks, scenic,