In 2015 it was decided that no additional excavation would take place in this area.
Further exploration needed to understand this block and its context in 2015
This cut stone block appears to be an in situ drain block related to the original drainage system of this area- probably funneling water from the north towards the drainage system below pavement 5449 to the south. Furthermore, cut 5760 appears to be related to the robbing of similar blocks and may also mirror the construction cut.
This appears to be a block that is part of a broken drain.