PHYSIOGRAPHY OF THE SOUTHERN TABLELAND OF N.S W. 343 



to the south, however, it spreads out considerably and loses 

 its typical " Senkungsfeld " nature and appears also to 

 increase in altitude. Professor David in the paper already 

 referred to, makes the following observations on it : — "It 

 was pointed out by Mr. Andrews that at the top of the 

 long hill bounding the Snowy Valley on the east, at thirty- 

 two miles from Cooma towards Jindabyne, the small 

 hanging valley, which there descends through a rocky 

 precipitous channel into the broad valley of the Snowy, 

 possibly owes its origin to a strong fault throwing down 

 westwards. Certainly the great width of the Snowy 

 Valley, between two and three miles at this point, is a 

 puzzling feature. Below Jindabyne the valley is narrowed 

 in by rocky rounded foot hills, through which the Snowy 

 River has cut a zig-zag gorge with overlapping spurs. 

 The question suggests itself, is this wide flat valley 

 with its rounded rocky foot hills, due to the glaciation 

 accompanied by a Piedmont glacier supplied by cascades 

 of ice formerly pouring over the edges of the Kosciusko 

 plateau in their passage to the east ? Or is this feature 

 due to trough faulting ? Is the Snowy valley above Jinda- 

 byne on the side of a narrow Senkungsfeld or trough fault?" 



The writer is of opinion that no evidence of glaciation 

 exists and believes that trough faulting affords the most 

 satisfactory explanation of the peculiar feature of this 

 region. Mr. E. O. Andrews, has, however, been making a 

 study of this particular area in connection with the develop- 

 ment of the Snowy River, and the results of his investiga- 

 tion will be awaited with interest. The writer would 

 suggest that the faults bounding the western side be 

 called the Pretty Point faults, and those on the eastern 

 side be called the Jindabyne faults. 



II. The Colinton Senkungsfeld. — This lies along the 

 course of the Murrumbidgee River from Cooma to Michel- 



