420 



Glaciers. 



their terminal and lateral moraines, still in some cases 

 as well defined as moraines in lands where glaciers now 

 exist. Beautiful examples of such moraines are seen in 

 the Pass of Llanberis, between the precipice south of 



FIG. 87. 



Moraines and Roches Moutonnees between Cwm-glas and 

 Blaen-y-nant, Pass of Llanberis. 



the road and the bridge called Pont-y-gromlech. Not 

 far behind the house called Blaen-y-nant, there is a 

 large moraine lying on the slope of the hill. It con- 

 sists of heaps of boulders, clay, and angular gravel 

 and blocks, identical in genera spect with many 



