:220 



BBPORT — 1886. 



Gae Gwyn Cave, 



When tlie explorations were suspended last year it was supposed that 

 we had just reached a chamber of considerable size, but after a few days' 

 work this year it was found that what appeared to be a chamber was a 

 gradual widening of the cavern towards a covered entrance. The posi- 

 tion of this entrance greatly surprised us, as hitherto we had believed 

 that we were gradually getting further into the limestone hill. The rise 

 in the field at this point, however, proved to be composed of a considerable 

 thickness of glacial deposits heaped up against a limestone cliff. As the 

 materials covering the bone-earth within and at the entrance were chiefly 

 sands and gravels, it was found necessary to suspend operations in that 

 direction and to ask the landlord (E. Morgan, Esq.) for permission to 

 open a shaft directly over this entrance from the field above. As this 



t. 6 in. 



Brown clay with boul- 

 ders, 2 ft. 9 in. 

 Yellow loamy clay, 7 in. 

 Gritty boulder clay, 9 in. 



Stiff reddish clay with 



boulders, 2 ft. 3 in. 

 Sand, 2 in. 

 •Purple clay, 10 in. 



Sand with boulders, 1 ft. 

 Tin. 



■Gravelly sand with boul- 

 ders and bands of purple 

 clay, 2 ft. 2 in. 



•Sandy gravel, 2 ft. 



.Fine banded sand, 1 ft. 

 5 in. 



•Red laminated clay and 

 bone-earth, Nrith angu- 

 lar fragments of lime- 

 stone and a few boul- 

 ders. Contiiined also a 

 flint-flake, from 2 to 5 ft. 



A. Carboniferous limestone. f) Position of the flint flake. 



Fig. 1. — Section at New Entrance to Cae Gwyn Cave. 



necessitated the removal of a considerable surface of land and caused 

 some damage to the field the Committee feel that their special thanks are 

 due to Mr. Morgan for his kindness in so readily acceding to their appli- 

 cation. This shaft, as at first opened, was about nine feet across at the 

 surface and over five feet at the bottom. It was subsequently widened 

 at the bottom in consequence of some falls, and the lower part, excepting 

 at one point, had to be carefully faced with timber. The upper part is now 

 much widened and sloped. The shaft was about twenty feet in depth, 

 and the deposits as shown in fig. 1 were made out in it. These were care- 

 fully measured by Mr. C. E. De Ranee, F.G.S., Mr. Luxmoore, and the 

 writer during the prosecution of the work. Below the soil, for about 

 eight feet, a tolerable stiff boulder clay, containing many ice-sci'atched 



