With Roz and Hazel.
Almost a family outing. At the dig, 6no. holes, c.300mm x 12mm, in the floor, to break-up slabs of dolomitic conglomerate (with calcite flowstone cap) to aid forward progress into open-space beyond. Roz and Hazel had a bit of a tour around before returning to offer some assistance. All set-up, retired to a safe distance, the evening's task was drawn to a satisfactory conclusion. There will be rocks and debris to shift next session, probably on Thursday evening. Left the cave.