Hi Stu,
The sump is a trifle snug at the start. It's about 65m long. James Cobbet got to an airbell 14m in. To reach this, and beyond, I had to remove several drag tray fulls of sediment before it enlarges a bit. Some 55m in, it rapidly 'surfaces' to a sadly just submerged roof. It then becomes a tight looking vertical rift which needed a tank taking of. This was before the current system of tank mounting came into being and it's another reason why I got no further. Started redigging the initial slope a few years ago for another crack at the end, but got involved in other things.
Some little sod also nicked my dragtray, is Swildons 2 a dodgy neighbourhood? You may also have noticed the sign I put on the dive line, now removed, saying 'Please do not pull on this line'. Needless to say, some shit for brains pulled it as hard as they could. If you're down that way sometime, could you put my lead in the bucket, I've got loads.
Many thanks, mike