View of one of the interior drums of the Mausoleum of Augustus.
Visible is the exterior wall of the drum, on the left, and the cylindrical core of the mausoleum on the right—where urns of Augustus and other members of the royal family were deposited.
On the upper left, note that some of the arches are partially preserved—the roof has collapsed—and some ancient travertine blocks (white) and ancient brickwork are visible.