In reply to James Beaumont:
I was there about two weekends ago. The Wall Within looks mostly unaffected however part of the entrance to the tunnel at the very top of the route has collapsed. The twin abseil bolts were still there inside the tunnel and looked good IMO but there is likely to be some loose debris just below the tunnel opening and possibly some loose stuff still up above the route.
Climbing this route is beyond my ability but if you are going to give it a go then I'd recommend abseiling the route first to check out the state of play and possibly remove any loose stuff that might be present.