Ключевые слова: black, black hills, blue, cathedral spires, custer state park, dakota, eroded, forest, geology, highway, hills, landscape, mountain, national, natural, nature, needles, needles highway, nobody, outdoor, park, road, road trip, rock, rock formation, scenery, scenic, sd, sky, south, south dakota, spires, state, stone, the needles, tourism, travel, tree, view,