https://en.wikipedia.org/wiki/Stele
A stele (/ ˈ s t iː l i / STEE-lee), or occasionally stela (plural stelas or stelæ), when derived from Latin, is a stone or wooden slab, generally taller than it is wide, erected in the ancient world as a monument.The surface of the stele often has text, ornamentation, or both. These may be inscribed, carved in relief, or painted.. Stelae were created for many reasons.