Large layer that is probably the last vestige of late antique activity in Room H1. Fills the negative feature where the imperial and republican period features once existed.

The series of cuts into this layer, the evidence of burning, the compaction of several parts of this layer into a kind of 'working floor - all suggest that this is an occupation surface related to the production or processing of metal and glass. This activity seems to be related to the last phase of occupation, since this layer is within the obliteration of the republican (and presumably early imperial) floor surfaces that would have been associated with the walls of Room 1.