PANGONG: A GLACIAL LAKE 6il 



along the southwest side of the lake on the steep shores between Spang- 

 mik and the outlet, on the promontory east of Man, and in the first 

 deep bay east of Tukkung. An alhed phenomenon is found in 

 certain well-defined benches contouring around the isolated hills 

 or knobs which he in the .vicinity of Tukkung, and probably repre- 

 sent the hne of weak erosion between the main Pangong glacier 

 and the large Lamle tributary. The panorama of the lake (Fig. i) 

 was taken from one of the knobs which itself is seen in Fig. g (A) 

 as a fiat-topped promontory. In the panorama two knobs may 

 be seen (C and D), both of which were islands when the lake 

 stood at the higher levels. The benches are best developed on the 

 sides of the farther and larger knob (C), which hes about a mile 



Fig. 10. — View to the north from an isolated glacier knob near Tukkung, show- 

 ing the older and the younger set of beaches. 



west of the mouth of the Lamle brook. They are cut in the soft, 

 thick talus of. the schistose rock, and, as appears in "Fig. lo, have 

 clearly the form of strands. In the photograph five benches appear. 

 In reality there are six or possibly seven, lying at subequal intervals 

 between 90 and 210 feet above the lake. Below them, in the right- 

 hand portion of the photograph, still other strands appear, which, 

 however, are much younger and will be considered later. Putting 

 together the evidence of the dissected fan at the outlet, the deposits 

 of sinter up to a height of 200 feet, the faint strand-lines cut in the 

 sohd rock, the fragmentary terraced fans, and the benches about 

 the isolated knobs, the history of the lake at this time seems fairly 

 well defined. After the retirement of the last of the basin-making 



