Antelope horn, Asclepias, Asclepias asperula, Enchanted Rock, Enchanted Rock State Natural Area, SP, United States, Ups, america, american, boulder, boulders, central, close-up, closeup, closeups, color, day, daytime, environment, habitat, habitats, hill country, horizontal, image, landscape, landscapes, milkweed, milkweeds, natural world, nature, north america, outdoor, outdoors, park, parks, photo, rock, rocks, scenery, scenic, scenics, south, southern, southwestern, state parks, stone, stones, texan, texas, usa, view