We continue to work our way to the floor in WSN, which appears to be closer in some places than in others across the interior of the room. Toward the southeastern side of the room, I believe we are basically upon the floor (and indeed in some places already on the natural bedrock that appears to have been incorporated into the floor). But the floor of the room seems to slope downward to the northwest. Today we lifted the tarp and after general cleaning of the backfill that was on top of it, realized that the northwest wall of the room appears to extend to another course of stones. Also, the matrix in this area does not seem like a floor, but is rather a medium brown silt with some clay. This situation puts in question the round stone in the western/northwestern area of the room, which last year I took to be a column base. That stone now seems too high to have served that function, unless it is associated with a later building phase than that of the walls of the room itself. I opened a new locus as a kind of probe in this northwestern area of the room, locus 48 (other new loci today include locus 46 for the top of the southwest wall and locus 47--see place table). Thus far, rather high material densities in this locus.