Fill of a linear cut in the bedrock (SU564) running east-west from wall SU541 in the west underneath wall SU420 to cut SU478 in the east. Fill is equal to SU552 and cut SU564 is equal to cut SU553 on the east side of SU478; SU564 and SU553 are the same trench cut by SU478. In the part of the fill to the east of the wall SU420 was found a cluster of stones that may represent an intentional deposition/packing (photos 2101-2102), analogous to the packing found in fill SU552 to the east of cut SU478.