long spikes of an "old man of the mountain" cactus (oreocereus celsianus)

flower leaf art branch invertebrate plant animal tree insect yellow twig nature sculpture food wildlife iron frost wood isolated detail desert botany botanical thorns natural macro flora closeup andes argentina arid bolivia brown cactaceae cacti cactus dark environment fluffy white hair fuzzy garden old man mountain oreocereus celsianus ornamental outdoor peru prickly ribbed sharp south america spike spines spiny succulent summer thorn wooly native sunlight