It is an old quarry complex, now back-filled and planted with many trees. However, the main walls of the quarry have been preserved and can easily be viewed. The rock is the Woolley Edge Rock, laid down in Carboniferous times, about 310 million years ago by an ancient river. Please remember when you visit, that this is a protected geological site. Do not hammer, or damage the rock faces.
This is such an important outcrop that in 2013 The International Conference on Fluvial Sedimentology (it means rocks deposited by ancient rivers) visited this site.
The best route is to use the closest access gate to Newhill Road, and go down the path to the bottom. Ahead of you is the main face where you can see many features of the Woolley Edge Rock, including faults, cross-beds, ripples, gravel layers, and the tilt of the rocks eastwards.