Living rock can refer to: Rock-cut architecture, in phrases such as "hewn from the living rock" Dwarf succulent plants resembling stones, especially of the genera: Ariocarpus Astrophytum Aztekium Epithelantha Geohintonia Lithops Lophophora Obregonia Turbinicarpus Strombocactus Pyura chilensis, a tunicate that resembles a mass of organs inside a rock See also Live rock