I nearly pulled it off and it is now very very loose and unstable.
It is on the right of the belay ledge at the top of pitch 5 (Rockfax).
About 3x2x2 ft so not enormous but enough to hurt especially if it fell down onto the lower parts of the route or down one of the adjacent gullies.
It is avoidable but if it fell off I’m not sure where it would go. It was too misty to judge where it would fall lower on the route. It may have fallen off and down the sloping belay ledge and come into contact with anyone stood belaying.
Is there anyone else I should inform? Anyone got a contact for Aberdyfi SAR?