w 



ithin a Narrow Area. 



171 



attains its greatest depth between Berry and Diednch 

 Creeks (B and M, fig. 2). In all places along the gorge 

 the eastern rock wall is higher than the western; the 

 alignment in elevation of the tops of the gorge sides pre- 



FlG. 11. 



Fig. 11. Postglacial topography and drainage. 



serving the steep gradient of the slopes of the truncated 

 spur of Davies Hill (fig. 6a). 



If we suppose East Sixmile to have been diverted 

 against its eastern wall we should expect to find some 

 evidence of this in the valleys of its tributary streams 

 from Davies Hill, for such a diversion would result in 

 the steepening of those slopes of Davies Hill against 

 which the stream had been forced and into which it had 



