Vol. 54.] 



EXPLORATION OF TY NEWYDD CAVES. 



125 



ceased to explore further. In the walls of the passage and right 

 round the cave there is an horizontal fissure 2 to 3 feet high, filled 

 with blue clay. This we have not removed, as the roof appears to 

 have no other support and is here much broken. There is, how- 

 ever, no fissure connecting with the surface, since we made an 

 artificial tunnel through solid rock right across the roof of the 

 cave (see plan, fig. 2). 



Fig. 3. — Section 



No. 1 in the Eas^fern Cave. 



L_ 



Dat um 425 Ff^ above sea. a ni sturbe^ 



^$Gsf3 i-L 



A S Points oF intersecti 

 B I of sects. 2 and 3. 



The following are the measurements taken during the excavation : 

 the positions can be seen in the plan (fig. 2, p. 124), in which 

 the number of each section is given in Arabic numerals. 



At the junction of Sects. \ Sf 2. 



Ft. ins. 



Disturbed 



Laminated clay 

 Clayey gravel . . . 

 Laminated clay 

 Clayey gravel ... 

 Laminated clay 

 Clayey gravel .... 

 Laminated clay 

 Clayey gravel . . . 

 Laminated clay 

 Coarse gravel . . . 



Junction of Sects. 4 Sf 5, 

 at mouth of Eastern Cave. 



Sand 



Plastic clay 



Sandy gravel ... 



Sand 



Laminated clay 

 Blue clay 



Ft. 



ins. 



6 







4 



3 

 10 







Junction of Sects. 1 ^ 3. 



Disturbed.....'.... 

 Sandy gravel . . . 

 Laminated clay 

 Clayey gravel ... 

 Laminated clay 

 Clayey gravel . . . 

 Laminated clay 

 Clayey gravel ... 

 Laminated clay 

 Coarse gravel ... 



Ft. 



ins 



1 









6 



1 









6 





4 





6 





2 





8 





3 





3 



Middle of Sect. 6. 6 feet 

 passage of Eastern Cave. 



Ft 



Sand 



Sandy gravel 



Plastic clay 



Clayey gravel 



Laminated clay and "I , 



gravel , 



Blue clay and sand 1 



in 



ms, 

 6 

 4 

 7 

 3 



6 

 10 



