These are some high altitude plants with the hairy thing going on.
Cleistocactus straussii is from Southern Bolivia, ranging into Northern Argentina. There’s some harsh terrain there. We see these individual branches grow to about 10ft. tall and live for about 10 years.
Espostoa lanata is a tree like cactus from Southern Ecuador and into Peru. The woolly hairs have been used as pillow stuffing traditionally in Peru. We see these get 10ft. tall and some say they can reach 20 feet, but I’ve never seen that.