This classification provides for the visible signs of past stone cutting evidence. Wedge and Groove was the first method used and involved pressing wedges of wood into cracks in the rock and pouring water onto the wood, which would slowly expand and eventually split the rock. Feather and Tare followed using two iron 'feathers' and an iron 'tare' between them which was then hammered into a hole in the rock, again eventually splitting the rock. Sometimes the iron pieces could not be removed. There are many examples of split rock on the moors.

The map below is set to a maximum zoom of 1:50k. To zoom into the map further (1:25k) you need to be a subscriber. You can become a subscriber by visiting this page.

Or login here if you are already a subscriber.