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| 0071 |
Southern Tibet : vol.4 |
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31
As the ground gradually rises we finally become aware of a little lake to the
S. E. A little farther on we again cross three well defined beach-lines and still farther
on two large and several small ones. They prove that the lake, in the same way
as *Lakor-tso* and many other lakes in Tibet, has gradually dwindled in post-glacial
time. We could be here some 20 m. above *Camp V*. The erosion terraces of the brook
are, therefore, a more recent formation than the beach-lines which also were more
rounded and worn by wind and water.
The rise becomes more noticeable as we proceed up between the red hills of
grey, dense limestone. From here it looks as if a long, narrow neck of mud or clay
projected far into the lake from its northern shore, though it is difficult to tell whether
this simply is due to the ordinary mirage of these regions or not. The chief water-
course of the little valley was now dry, but not far from the pass there was a very
small and perfectly clear brook, obviously coming from the last snow patches still
left from the storms of the previous day. The rise up to the little pass is very
gradual. On its broad and open saddle we are surrounded on all sides by com-
paratively low mountains (Pan. 18A and 18B, Tab. 4). To the N. E. is seen the
valley by which we go down to *Camp VI* and *Aksai-chin*. Behind the mountains
to the south the little lake is situated, now definitely hidden.
In the valley on the other side there is some scanty vegetation, the ordinary
yapkak and even some poor grass. The valley is bounded by red, yellow and black
hills of dark grey, dense limestone which is dominant in the whole region. In the
middle of the valley there is a very little brook winding in a gravelly bed between
erosion terraces 1 or 2 m. high. Of animal life there were now only two *Pantho-
lops* antelopes to be seen, and excrements of a wolf. Wild asses or *kyang*, we had
seen only once. A few ravens were always following the caravan. The valley slowly
turns to the north, and in the same direction an extensive plain seems to be situated,
beyond which a mighty black range with eternal snow is visible. The brook some-
times vanishes in the gravel of its bed, but soon again reappears. A comparatively
large side valley enters from the right. Grass and yapkak becomes more frequent,
and was, for Tibetan conditions, abundant at *Camp VI*, where everything was to be
had: grass, fuel and water. From the camp the view was more hidden than from
higher up in the valley. Pan. 17A and 17B represent the surroundings of the place.
The most interesting is the view of the north, where the continuation of the broad,
open valley is seen, later on turning to the left and emerging on the great *Aksai-
chin* Plain. We had to proceed farther north to be able to see the high mountains
belonging to the *Kwen-lun* System.
The day's march of *September 7th* was of great interest as it took us to a
region of quite a different appearance than those we had left behind. The latitudinal
valley of *Camp V* and the little lake had given us a presentiment of the great plains
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707
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725
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736
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746
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756
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