BACK TOR ROCKS

Derwent Edge is a millstone grit escarpment that lies above the upper derwent valley in the Peak district national park in the English county of Derbyshire An Ordanance survey column (trig point) marks the highest point of the Edge at Back Tor (538 metres, 1765 feet). North of Back Tor the edge extends into Howden edge and enters the county of south yorkshire.