Argentina's Cono de Arita, a perfect cone, isn't a volcano. It's solidified magma, sacred to pre-Incan cultures. Cono de Arita is a remarkable geological formation rising 200 meters from the Salar de Arizaro salt flat in Argentina. Contrary to its volcanic appearance, it's a relic structure of Tertiary sedimentary rocks shaped by erosion. Its near-perfect cone has led some to compare it to the pyramids of Egypt. The name itself has indigenous roots; 'Arita' is an Aymara term meaning 'sharp,' a f