The ashlar pier appears to create a junction between the ashlar threshold 5469 and the ashlar wall 5439, enclosing the space of Room 14. It is associated with one of the earliest phases of occupation in the area, matched by a pier on the opposite side of the ramp. In its earliest use, it was part of the facade of the Area F monumental structure but has been re-used in the construction of a later tabernae-like structure as evidenced by the concrete repairs between the south end of SU 5439 and the pier as well as a concrete wall 5441 east of the pier.