Description:The face of one of the stone quarries on Forrester's Bank. The rock is Chatsworth Grit, one of the varieties of Millstone Grit which are found in North Staffordshire and the Peak District. This rock was formed between, approximately, 315 and 325 million years ago when this area was a large river delta. Rivers deposited the sandy particles that later became the Gritsone which was used for local buildings and as an abrasive. The rock was originally laid down in horizontal layers but these have been tilted by earth movements so that they appear almost vertical in the photograph. The quarry is now closed.