 Wenlock Edge, running through the middle of the Shropshire Hills AONB, is a long, low ridge, which extends for over .Further south, the Welsh border reaches over high, at Black Mountain, which is thus the highest point in Herefordshire.The Malverns are made from some of the oldest rock in England (around 680 million years old) and extend some through two West Midlands counties Worcestershire and Herefordshire as well as northern Gloucestershire in the southwest.