organ pipe national park, arizona - group of large cacti against a blue sky

ajo america arborescent arid arizona barrell bear blue cacti cactus carnegiea chain cholla desert drive dry engelmannii engelmanns ferocactus flora fruit fulgida gigantea group hardy hot landscape large learn mountain national nature north opunita opuntia organ park pear pipe plant plants prickly rock saguaro sky sonoran spine stenocereus succulents teddy thurberi travel tree usa vegetation weather wild wilderness wislizenii nacti