5th June 2018: with Brockers and Duncan.
Rumours of a significant blockage of the 60m crawl, the result of induced rapid speleogenesis (IRS), turned out to be unfounded. The obstructing flake, that bars further progress along the passage, had come down, bringing other stuff with it, a probability that had already been discussed some time ago. We moved some of the larger flakes/boulders into a position that we could work around and set about removing a quantity of fractured rock. Managed to reach forward and clear much of the debris along the right-hand side, there is more, but that was out of reach. We could almost see the way forward and detected a significant air movement. The way ahead remains promising. Another application of IRS may be all that is required to reduce a couple of obstructing boulders and gain access to the potential passage beyond.