Tomb 40 has an L-shaped burial chamber and borders
on the left side upon the access alley
to tomb 39. Why this grave does have this shape is uncertain.
The facade lies close against the Via Severiana. The threshold of
is longer than the entrance itself and lies partly under the wall.
The threshold was probably placed here during a later use of the
In the burial chamber the left wall turns halfway 90 degrees inside
so that room was created to enter tomb 39.
The left and back-wall had arcosolia for inhumation.
Also beneath the floor, now disappeared, there were formae with
space for four bodies each.