Though all of the rocks which from this geologically unusual hill are Precambrian in age, the relationships between them are not straightforward; several boundaries are geological faults. This close-up shows granophyric granite to the north of the central dip in the ridge.
Uploaded to Geograph by Alan Bowring on 25 July 2015
Photo © Alan Bowring, 25 July 2015. Licensed for reuse under this Creative Commons licence