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PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [May 28, 



is a flat occupied by gravel of an ordinary river-alluvium, of a width 

 of two or three miles. The level of the valley is 10,000 feet ; and 

 from it rise mountains that, on the north-eastern side, run back to 

 a ridge of 20,000 feet, out of which rise peaks of a much greater 

 height. From this ridge come a succession of ravines that join the 

 main Nubra valley, being, at the point of junction with it, extremely 

 narrow gorges. At the mouth of each of these are alluvial fans, 

 which project out into the flat of the river- alluvium. One of these, 



Fig. 3. — Fan at Tigar, in Nubrd, Laddlch; seen from the mountains 

 behind Chardsa. 



complete and unchanged, is shown in figs 3 & 4. The first sketch 

 gives a view of it got from far up the mountains on the opposite side 

 of the main valley ; the other gives a profile view taken from the 



Fig. 4. — Profile view of Fan at Tigar, in Niihrd, Laddlch. 



