“Columbarium.” Unless you took Latin or helped your teenager cram for SAT vocabulary, chances are this word simply doesn’t ring a bell. Give up? A columbarium is a cave of compartmentalized housing for doves and pigeons dug into soft rock in the 3rd century BCE. In Israel, where I am vacationing, my family and I decided to visit some of the 480 caves in Beit Gvurin, located in the south of the country. These caves were used over the course of 2,000 years as quarries, stables, granaries, storerooms, water cisterns, work spaces for pressing grapes and olives, cultic houses of worship, dovecotes, hideouts and grave-sites.