With Roz.
Another application of induced rapid speleogenesis, 6no. holes at the current end of Merlin’s, to widen a small gap on the south-side of the west extent; 4no. in the roof and 2no. lower down. I managed to snap my long drill bit (460mm x 12mm), good job I had a spare. Sounded good. Hopefully, it will be more successful than the last attempt.
