As a result of our construction of a Yellow Brick Road from the Moot House to the Lower Holy Well, we have discovered a thin place just below the bramble patch in Lower Meadow.
We've put red and white tape round it, and Hnaef is down there with gauges and a spirit level, trying to ascertain just how thin it is. But we reckon ir's at least a Grade 3, as we can hear chanting.
So until we've got any hard data, please avoid the area. Particularly thin places can be very hazardous. We wouldn't want anyone to end up in Narnia.