a smooth curve of the channel of the colorado rive, alamo canyon, arizona, art, cactus, canyon, chains, desert, dreamy world, floating island, forest, fortress, glen canyon, grass, height, horseshoe, horseshoe bend, in the sky, lake, landscape, mars, mountain, night, rainbow, river, rock, sky, snow, square wave, star, stone, stones, surface, town, tree, united states, valley, water, waterfall, winter