In SLT4 still removing baulk separating operation from SLT1. Lots of collapse stones near the bottom that are taking awhile to clean and remove. Noting a burned crumbling clay formation with powdery surface at southern edge of baulk under a couple of collapse stones. Arkadi says it may be natural.
In SLT2 we finished uncovering bedrock under locus 11 in southern portion of operation. The recent heavy rains loosened the soil around big locus 9 wall and one of the bottom stones fell out. Since this area is down, we're focusing on taking locus 6 down to bedrock.