oreocereus celsianus or `old man of the mountain` surrounded by golden barrel cactus

america andes argentina arid barrel bolivia botanical botany brown cactaceae cacti cactus celsianus cultivate desert drought dry environment environmental flora garden green grow growing man mountain nature old oreocereus ornamental outdoor park peru plant prickly reserve resistant ribbed round scene scoria sharp small south spike spines spiny spring stem succulent summer the thorn view yellow