Given that it covers the original floor surfaces of the northeastern part of the secondary courtyard - both the tufo slabs and the perimeter of crushed tufo - this wall cannot belong to the earliest phase of the complex, and must be related to the reorganization of this space in the second phase, when the complex had changed uses but before it was totally abandoned and filled by dumping activity. This wall seems to enclose a much smaller space (Room 17) whose use revolved primarily around the feature at the western end, built in tile with a concrete superstructure (SUs 5577 and 5745). This feature was possibly an oven or hearth, and this room may have been related to some kind of productive activity.