A little off topic, I'm afraid, but it may be worthwhile recording how the pendulum rope was originally fixed.
Mike Wooding and I originally
developed a route down Rat Hole in 1984. On that original route there was a tensioned traverse down the rift between the main Rat Hole shaft and Mousehole, reaching a very precarious stance overlooking Mousehole about 15 metres below the current one. We returned some 20 years later to find that the spits were in poor condition, so we set about rebolting it with P-hangers (although Mike finished up doing the lower section on his tod). The route was totally redesigned, and shared litle of the original
At the stance at the start of the rift leading to Mousehole we could see a further stance a few metres away that was perfect for a couple of bolts, but the rift was too wide to get to it. I went back up the first pitch to a small chamber on the true left, where there was a small gap in the back wall. I hung a rope through that and Mike was able to use it to pendulum across and reach the stance. Later, Mike climbed the pendulum rope, and fixed a new 10.5 mm rope to a P-hanger to make it a feature of the route.
The rope had now been in place for 20 years. It is it probably due for replacing, and maybe adding a second attachment bolt.
If anyone is interested, one can traverse over the top of Mousehole to reach a respectfully-sized inlet with a couple of avens, and a passage emitting a howling draught that with a little bit of work will probably enter Motley Pot. We meant to go back, but Mike died soon after.