Today we began to pull some of the rocks that are clearly fall from the N quadrant of the trench, after I drew them, and after the guys cleaned them so that I could examine them closely. Under some of these we found a clay feature coming out from the west baulk, and shaped kind of like a tube. We cleaned it off and then protected it with plastic for tomorrow. We also finally changed locus in most of the western 4 m of the trench, bounded by what are hopefully walls on the S and E sides. Locus 3 is the new locus bounded by the tentatively-labeled walls, and so far, I think that locus 4 will basically be everything else, but I will determine that for sure tomorrow. We found a jar stopper and a metate today.