Ключевые слова: asphalt, bulgaria, canyon, cliff, crag, dean, ecosystem, environment, environmental, europe, evergreen, fir, firtree, furtree, gorge, highlands, hill, hillside, impressive, landmark, landscape, marble rocks, mountain, mountain range, mountain ridge, mountains, nature, nature landmark, no one, no people, nobody, outdoor, outdoors, peak, pine spruce, ravine, rhodope, rhodope mountains, road, rock, rocky, rodopi, route, smolyan province, spruce, travel, tree, trigrad gorge, way,