Ключевые слова: balkans, beautiful, beauty, belogradchik, bulgaria, bulwark, canyon, cave, cavern, central, cliff, climbing, clouds, color, colorful, day, destination, development, eastern, europe, famous, field, forest, formation, fortress, grass, group, high, hills, landmark, landscape, light, limestone, mountain, mountaineering, natural, nature, outdoors, pattern, red, ridge, rock, rocks, scenic, sky, tourist, travel, trees, vidin, wall,