Ключевые слова: adventure, area, background, balkans, brushwood, bulgaria, bush, canyon, cliff, eco, ecology, emen, environment, erosion, flora, foliage, forest, freshness, geology, gorge, green, greenery, hiking, landscape, mountains, natural, nature, nobody, outdoors, overgrown, plants, ravine, rocks, rocky, rough, scenery, stara planina, stone, summer, terrain, tranquil, travel, trees, uncultivated, vegetation, wild, wilderness, wildlife, woods,