Earth
Sift debris from U84
Architecture
Poss revetment wall
Architecture
Retaining wall
Earth
Debris layer between Retaining Wall 6 & the LIR2 Skinwall 9
Earth
Debris layer between Retaining Walls 6 & 9
Architecture
Outer retaining wall
Earth
Rubble layer supporting Retaining Wall 6
Earth
Earth layer W of Retaining Wall 6 & under Retaining Wall 9 but above MB layers
Earth
MB rampart material