JB said:The CPCC riging guide says that SRT isn't appropriate for the trip.
paul said:Not been there myself. Normally that would mean that the pitches are too short and/or awkard to be worth rigging properly with SRT rope.
The Caves page at Hith'n'Hike's site ( http://w01-0504.web.dircon.net/pdc/caves.htm ) shows Merlins as equipped or partly-equipped with eco anchors.
So there are probably decent artificial belays for ladder and lifeline.