Possible cut of square truncation in wall (4040). Sub - square, vertical sides and base not excavated. The break of slope at the top was vertical and base not seen. Truncates wall 4040.
Possible fill of square truncation in wall (4040), not excavated to undisturbed level only 0.30 down so all 2019 backfill. Soft, mid greyish brown, sandy silt.