During post-excavation study, this feature was reinterpreted as a possible posthole used for the construction/destruction activity as the Phase 1B building gave way for Phase 2.

This cut, especially in relation to the tiles located to the north (SU not assigned at this point) may be the cut of a drain for the compact floor surface (also SU not assigned).

The SU is a cut of unclear function, and may have been a drain.