Two of the exposed, partially overgrown, rock faces on the former quarry on Barrow Hill, in the LNR of the same name in Pensnett.
The quarry was for a hard rock of volcanic origin, diorite, which is a form of basalt. Dudley Council market Barrow Hill as the “Dudley volcano” (it erupted300-odd million years ago).
Diorite was also quarried just across the borough border in Sandwell, where the Rowley Hills were the source of Rowley Rag.
