Black Rocks Stonnis Rocks Gaia ( E8 6c , 5.13a X ) follows the groove on the outcrop at the left of the picture Location in Derbyshire Location Peak District , Derbyshire Nearest city Cromford Coordinates 53°05′54″N 1°33′49″W  /  53.0982°N 1.5637°W  / 53.0982; -1.5637 Climbing type Traditional climbing , Bouldering Height 5–35 metres (16–115 ft) [ 1 ] Pitches Mostly single-pitch Ratings Rock grades of Diff to E9 (most are above E1) Bouldering of V0 to V9 [ 1 ] Rock type gritstone [ 1 ] Quantity of rock...