“ The summit is a peaty moorland, through which masses of rock project at intervals. The name of this high plateau has from the 17th century been identified with “peak,” the pointed or conical top of a mountain, but the very early references to the district and certain places in it show clearly, as the New English Dictionary points out, that this connexion is unwarranted. The name appears in the Old English Chronicle (924) as Péaclond, of the district governed from the castle of Peveril of the Peak (see Derbyshire) , and also in the name of the cavern under the hill at Castleton, Péac’s Arse. ”