Southern Tibet : vol.3 / 506 ページ（カラー画像）

0506	Southern Tibet : vol.3
南チベット : vol.3

to the east, which is said to be more comfortable, though it crosses the double
threshold Shalung-la, 5,320 m high; between the two passes is the valley Shalung-
lungpa, a tributary to Gyägong, or, as it is called lower down, Kyungtsang. From
Shalung-la the Chomo-uchong again presents a beautiful view, and now, when seen
from the north, the mountain group does not look like a knot or accumulation of
peaks, but like a real, sharp range with several peaks in a line. In this perspective
it became clearer than before that the Chomo-uchong is a link between Lunpo-
gangri and the comparatively low range which is situated between the Raga-tsangpo
and the Tsangpo.

Camp 399, in the Gyägong valley, is at 5 114 m. From here three different
roads start northwards through the different valleys and over three passes, each
simply called Gyägong-la; they are situated between N.W. and N.E. My route
crosses the eastern Gyägong-la, which is surrounded by sandstone. From this pass
a few flat snowy peaks are seen to the north, draining to the Chaktak-tsangpo. In
the northern Gyägong valley, at Memo-chusän, some hot springs, surrounded by
concretions of lime and sand, crop out from the ground; one of them had a tem-
perature of 34,2°, in another the water was boiling. At Camp 400, 5 333 m high,
a real ice-lake had formed in the valley. This lakelet is the centre of a little iso-
lated basin without outlet; from its northern shore the ground again rises slowly to
the flat pass Damche-la, 5 418 m high.

From this pass a little brook descends N.W. to the Chaktak-tsangpo, along
the left bank of which the road runs north. The Chaktak-tsangpo goes out from
the southern end of Lapchung-tso, a small lake of a height of 5 193 m and sur-
rounded by hills. Having crossed the Damche-la and reached the comparatively
open country of Lapchung-tso, one gets a much clearer and sharper view of the
Kanchung-gangri than even from the south. The northern side is much richer in snow
than the southern, and three moderately large, and several smaller glacier are seen,
all of them short and steep. Proceeding north from Camp 398 we have thus crossed
two important passes, Gyägong-la and Damche-la, between which the little basin of
Memo-chusän is situated. The Shalung-la, on the other hand, is without any im-
portance, and could easily have been avoided. This orography seems to prove
that Gyägong-la belongs to the same range as the Lungring-la near Amchok-tso, or
the western-most end of the Nien-chen-tang-la, whereas the Damche-la is situated
in the Kanchung-gangri.

From Lapchung-tso, Camp 401, the following observations are made: to the
S.S.E. is a valley Salung-changtang which seems to be a tributary of the Chaktak-
tsangpo; south-westwards are the high peaks of Kanchung-gangri, also called Kang-
chung, Känchung, Kamchung, Kämchung or Lap-känchung by different informants;
I have accepted the most ordinary appellation, Kanchung. To the S. 44° W. is a
saddle, Tsigu-la, between two humps of the Kanchung-gangri, by which another road from
Camp 398 goes to Lapchung-tso. The region north of Tsigu-la and Kanchung-

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