The columbaria were underground chambers, containing niches in the
walls, in which were placed the urns containing the ashes of those who
were burned. As the niche was like a dove's nest in shape, it was
called a "columbarium," the whole tomb a "columbaria." This one was
discovered by the Marchese Campana, and is carefully preserved. Here
were buried the freedmen of Augustus while Hylas and Vitaline were the
custodians.
_Returning to the Via Appia_, the second gate on the left admits to
the