There is a fresh fall adjacent to Rampgill Shaft where stone arching has given way in the main level. There is a stress line running along the level each direction in the top of the arching where blocks have flaked, the shaft may have something to do with the ground movement responsible for this.
The fall itself is about three feet high with more to come down, no doubt about this.
I suggest a photograph being posted as a way to monitor the situation, unfortunately I didn't have my camera.
I think a bit of care in at area by visiting parties would be wise as well.
My avatar is a poor likeness.