SU 5533 cuts tufo slabs 5436 and sits adjacent (to the east) of late cement wall 5465 [? - illegible] (which was constructed over slabs 5436) and to the west of a well feature (covered with a modern grate and cement). The fill was previously excavated by the Soprintendenza, leaving little information extant about direct stratigraphic relationships or purpose. It possibly served as some sort of post hole associated with later phases.