A rubble layer used for leveling for a feature that was robbed out. The feature was likely covered with marble as indicated by a few orthostat marble pieces in the southeastern corner of the SU. Cut 6191 was likely associated with the robbing out of this marble feature. Possibly a water feature, as indicated by tiles 6211 which cover the feature, and drain 6212 which runs north-south from the feature.
North portion of Room G-9
Photo from east