Large, stone-built drain cutting 15010 and 15012 in N (large, probably medieval walls) and 15032 in S (E-W wall with tile core). Later structure (as yet) defined in 15000 - (with exception of burials) and 'dump' 15026/15007. (AVO)
SU 15029: view toward the north
US 15029: view of exposed channel of the drain toward the north