680 J. MAGENS MELLO ON SOME BONE-CAVES IN CEESWELL CKAGS. 



On the northern side of the ravine the fissures are more numerous 

 and extensive. Some shallow openings at the western end have 

 been in use quite lately, as cellars or pig- sties for some cottages re- 

 cently pulled down ; but a little to the east of these there is a fine fis- 

 sure (A, fig. 2) with a large cavern-like entrance ; this fissure, locally 



Fig. 2. — View of Fissure A in Creswell Crags, looking north. 



called the " Pin-hole," I have begun thoroughly to explore. It pene- 

 trates some 40 or 50 yards into the hill-side, running nearly magnetic 

 north, and is fairly horizontal. It is moderately lofty throughout a good 

 part of its course ; but a short distance from its entrance it bifurcates 

 and becomes very narrow, the western fork being inaccessible beyond 



Fig. 3. — Transverse vertical Section of the Floor of Fissure A, in 

 Creswell Crags. 



a. Surface-soil, containing fragments of recent pottery &c, l|-6 in. thick. 



b. Bed of red sand, with rough blocks of magnesian limestone, rolled 



quartz and other pebbles, and many bones, in great abundance at 

 from 2 to 3 feet depth. 



