A class of monumental circular stone tomb found most frequently in the Orientalizing period at sites such as Vetulonia and Marsiliana d’Albegna, often containing rich materials, giving rise to names such as Circolo of the Ivories, Cauldrons, Bes, Jewelry, Trident, and Fibula.
Historical Dictionary of the Etruscans. Simon K. F. Stoddart.