Blink Bonny
Blink Bonny is apparently Norse for “nice view” and it certainly is (although not on the day I visited due to low cloud)
The drift was associated with the Ailesbury Mines to the north east, a collapsed drift can be seen in the hillside, with the tip in front now being home to a bench and viewpoint.

The are numerous other tips and collapses in the area at the same level as these working.