THE RHINE. 
193 
south wing of the Glarner double fold. This trough 
determined the original direction of the river, which 
has cut down to the present anticlinal arch. Originally 
it occupied a synclinal valley, but its present con- 
dition is entirely the work of erosion. 
Waldhaus-Flims stands far above the river, in 
beautiful woods, on the site of the greatest rockfall 
in Switzerland. The date of the fall is uncertain; it 
came from the Flimserstein, and the mass is no less 
than 700 metres in thickness. The Rhine has cut 
deeply into, but not yet through it. As usual with 
rockfalls the surface is very uneven, and contains 
several lovely little lakes. 
At Reichenau and Bonaduz the old river terraces 
are specially well marked. The remarkable changes 
which appear to have taken place in the river-system 
of this region have been already alluded to (vol. i. 
pp. 220, 221). 
Symonds regarded the valley of the Averser 
Rhine as the finest example of high river scenery 
known to him. “Without,’' he says, “going into 
details of description I will say that I have never 
seen anything in the way of high river scenery to 
equal this. The Averser Rhine beats the Sesia and 
the Mastalone hollow, and has long odds against the 
streams of the Dolomites, which I have always 
Scenery of Switzerland. If, ^3 
