Came accross a particularly nasty one yesterday, not a pothole, but where it looks like fibre optic cables have beee installed and the filled in trench has subsided.

This was a new piece of road to me and not one I often ride and I was not going particularly fast, but both wheels got into the trench and followed it until the subsidance was gone - probably best part of 50 yards or so. Seemed to be nothing I could to get out of the depression in the road.

If you were going at any speed it would have been a sixpence half crown moment.

Really would not want to hit that at speed, downright dangerous.