Catacombs are man-made underground passages primarily used for religious purposes, particularly for burial. Any chamber used as a burial place is considered a catacomb, although the word is most commonly associated with the Roman Empire.[1][2]
^Reich, Ronny; Katzenstein, Hannah (1992). "Glossary of Archaeological Terms". In Kempinski, Aharon; Reich, Ronny (eds.). The Architecture of Ancient Israel. Jerusalem: Israel Exploration Society. p. 312. ISBN978-965-221-013-5. (Latin: catacumbas - district near ancient Rome where one of the earliest Christian cemeteries was located). Subterranean rock-cut burial complex.