This E-W ashlar wall was part of the original phase of the complex, delimiting room 19 from the northern extent of this area up to the bedrock terrace. It has not been possible to determine whether its eastern end originally marked an opening, or whether this opening was created at a later phase, and then blocked (SU 5749) at an even later phase.
Ashlar wall running E-W at western limit of area (5686), Short stretch of tufo ashlar wall at west end of 5545 (5748), Packing of small stones and tiles between 5686 and 5748 (5749), and construction trench fill to north (5681)