i8o 



CARL S WARK. 



The near-by escarpment — Burgage Rooks, with its con- 

 tinuation to the north-west, known as Stanage Edge — represents 

 the main body of the Grit and runs wall-like, from 20 to 50 

 feet in height, for some four miles. The rocks there, similarly 

 to those which form Carl's Wark, are jointed and split into 

 sections, giving the cliffs much the appearance of artificial 

 masonry on a Cyclopean or gigantic scale. The vast number 

 of detached grit-stones which lie around is evidence of the 

 former extension of the main mass over the present moorland. 

 These loose blocks have been worked into millstones, but, to 

 judge by the quantity r)f worked and partly worked stones 

 lying in recent years on the moors a mile or more west of 

 Carl's Wark, the industry has largely decayed. For much infor- 

 mation on the geology of the district, see Memoirs of the 

 Geological Survey, North Derbyshire, 1869, and 2nd edition, 

 1887. 



