Frequent walking on the SU should be noted for it might contribute to the compaction of the soil. The frequent rectangular tufo rocks and the regular square shape of the SU might suggest something architectural, such as a collapse. On the other hand, the fact that three of four limits are due to the edges of our excavation and the SU is at the corner make it difficult to ascertain a clear interpretation of this deposit.
Friable brown deposit in the SE corner of the courtyard, S of 2436