Fig. 12.— Section through Com Gafallt Hill. (Seep. 107.) 



N.N.W. 



S.S.E. 



Cross-paths. 



[Approximate length = f mile.] 



Fig. 13. — Section from Pen-y-rhiw Cottage to Fron-dorddu 

 Farm. (See p. 108.) 



N.W. 



Pen-y-rhiw 



S.E. 



[Approximate length = \\ miles.] 



Fig. 14. — Section above Dol-Ifor Farm, from Allt-y-bont 

 to the old quarry. (Seep. 109.) 



E.S.E. 



Allt-y-bont. 



W.N.W. 



Old lS T ant-y 



Quarry. Stream. Fuddai 



Stream. 



[Approximate length = 1| miles.] 



C = Khayader Pale Shales. 

 B = Caban Group. 

 lib = Gafallt Beds. 

 Bb, = Gafallt Shales. 

 Bb\ — M.-Scdgwickii Grits. 

 Ba — Caban Conglomerates. 

 Ba 3 = Upper Conglomerate. 



Bcr = Intermediate Shales. 

 Ba 1 = Lower Conglomerate. 

 A = Gwastaden Group. 



Ab x = Micaceous Flags and Grits. 

 Aa = Cerig Gwynion Grits. 



