Today I closed locus 8 and opened locus 10. In locus 8 there was a clear change in the soil matrix along the SW wall, where the dark brown silt gave way to a redder clay. There is still a lot of wall fall along the SW wall as well, but a few aligned stones suggest there may be a feature there. Locus 10 eschews the SW wall and aims to reach the new matrix in the other areas in the NW side of the trench.