266 



THE BEAUTIES OE NATURE 



Sometimes two lateral valleys (see Plate) 

 come down nearly opposite one another, so 

 that the cones meet, as, for instance, some 

 little way below Vernayaz, and, indeed, in 

 several other places in the Valais (Fig. 31). 

 Or more permanent lakes may be due to a 



Fig. 30. 



ridge of rock running across the valley, 

 as, for instance, just below St. Maurice in 

 the Valais. 



Almost all river valleys contain, or have 

 contained, in their course one or more lakes, 

 and where a river falls into a lake a cone like 



