Southern end of Room 5 after removing a single layer of fill west of Wall 22 and finding a more reddish-brown, harder-packed layer (red arrows). Blue arrows indicates the continuation of Wall 22 north of late Roman Wall R.
Room 5, South of Wall R, after removing a layer of fill to the west (bottom red arrow) and before removing the angular crushed stones to the east (top red arrow). The blue arrow indicates the stones that may be the continuation of Wall 22 from the north.