This document discusses the challenges in distinguishing natural rock formations from carved rock art. It notes that experience helps in identification, but bias could still influence perceptions. Multiple factors must be considered, including weathering, geology, tools used, and archaeological context. While some features like peck marks indicate carving, absence of marks does not prove something is natural. Size, shape, depth, and symmetrical profiles provide clues, but many formations have ambiguous characteristics, making visual assessment alone inconclusive.