No actual work has been done as it seems that if you start, you may have to take a large part of the hillside down and where would you stop. We have kept an eye on it and the entrance arch, does not seem to have had anymore stuff come down. On the outside, the hill side has shed a few more rocks, so that area needs to be caution.
The lock did get stiff but has now been oiled and is OK.
Still don't hang around outside is the key advise.
The recent wet weather brought a tree down and a bit of a land slip in the Clydach Gorge, but I have not heard anything moving near Ogof Craig Ar Ffynnon.