Ключевые слова: adventure, alpine, altitude, background, bulgaria, cloud, cold, europe, eye, fish, fog, glacial, green, hike, hiking, kidney, lake, landscape, lower, meadow, mountain, national, nature, outdoor, overcast, panorama, park, peak, reserve, rila, rock, scenery, scenic, seven, sky, snow, tear, tourism, tourist, trail, travel, trefoil, twin, valley, view, water, wilderness,