Image Credit: "Ariocarpus fissuratus" by Frank Vincentz © CC BY-SA 3.0

Good luck finding one of these cacti in their natural habitat. Not only are Living Rocks hard to spot and in hard-to-reach locations, but they are also in danger of extinction.[1] After 50 years of age, this spineless cacti is only four to five inches in diameter, again, making them hard to find.[2] If you do happen to be walking by the US-Mexico Border and spot one, don’t eat it, they have similar effects to peyote but considered dangerous. If it is consumed, beware: it is considered dark sorcery by the Huichol Indians to eat.[3][4]